sop / asn1

lib/ASN1/Type/Primitive/Integer.php

Indentation +148 added lines, -148 removed lines

@@ -17,161 +17,161 @@
  */
 class Integer extends Element
 {
-    use UniversalClass;
-    use PrimitiveType;
+	use UniversalClass;
+	use PrimitiveType;
     
-    /**
-     * The number.
-     *
-     * @var BigInt
-     */
-    private $_number;
+	/**
+	 * The number.
+	 *
+	 * @var BigInt
+	 */
+	private $_number;
     
-    /**
-     * Constructor.
-     *
-     * @param int|string $number Base 10 integer
-     */
-    public function __construct($number)
-    {
-        $this->_typeTag = self::TYPE_INTEGER;
-        if (!self::_validateNumber($number)) {
-            $var = is_scalar($number) ? strval($number) : gettype($number);
-            throw new \InvalidArgumentException("'$var' is not a valid number.");
-        }
-        $this->_number = new BigInt($number);
-    }
+	/**
+	 * Constructor.
+	 *
+	 * @param int|string $number Base 10 integer
+	 */
+	public function __construct($number)
+	{
+		$this->_typeTag = self::TYPE_INTEGER;
+		if (!self::_validateNumber($number)) {
+			$var = is_scalar($number) ? strval($number) : gettype($number);
+			throw new \InvalidArgumentException("'$var' is not a valid number.");
+		}
+		$this->_number = new BigInt($number);
+	}
     
-    /**
-     * Get the number as a base 10.
-     *
-     * @return string Integer as a string
-     */
-    public function number(): string
-    {
-        return $this->_number->base10();
-    }
+	/**
+	 * Get the number as a base 10.
+	 *
+	 * @return string Integer as a string
+	 */
+	public function number(): string
+	{
+		return $this->_number->base10();
+	}
     
-    /**
-     * Get the number as an integer type.
-     * 
-     * @return int
-     */
-    public function intNumber(): int
-    {
-        return $this->_number->intVal();
-    }
+	/**
+	 * Get the number as an integer type.
+	 * 
+	 * @return int
+	 */
+	public function intNumber(): int
+	{
+		return $this->_number->intVal();
+	}
     
-    /**
-     *
-     * {@inheritdoc}
-     */
-    protected function _encodedContentDER(): string
-    {
-        $num = $this->_number->gmpObj();
-        switch (gmp_sign($num)) {
-            // positive
-            case 1:
-                return self::_encodePositiveInteger($num);
-            // negative
-            case -1:
-                return self::_encodeNegativeInteger($num);
-        }
-        // zero
-        return "\0";
-    }
+	/**
+	 *
+	 * {@inheritdoc}
+	 */
+	protected function _encodedContentDER(): string
+	{
+		$num = $this->_number->gmpObj();
+		switch (gmp_sign($num)) {
+			// positive
+			case 1:
+				return self::_encodePositiveInteger($num);
+			// negative
+			case -1:
+				return self::_encodeNegativeInteger($num);
+		}
+		// zero
+		return "\0";
+	}
     
-    /**
-     * Encode positive integer to DER content.
-     *
-     * @param \GMP|resource $num
-     * @return string
-     */
-    private static function _encodePositiveInteger(\GMP $num): string
-    {
-        $bin = gmp_export($num, 1, GMP_MSW_FIRST | GMP_BIG_ENDIAN);
-        // if first bit is 1, prepend full zero byte
-        // to represent positive two's complement
-        if (ord($bin[0]) & 0x80) {
-            $bin = chr(0x00) . $bin;
-        }
-        return $bin;
-    }
+	/**
+	 * Encode positive integer to DER content.
+	 *
+	 * @param \GMP|resource $num
+	 * @return string
+	 */
+	private static function _encodePositiveInteger(\GMP $num): string
+	{
+		$bin = gmp_export($num, 1, GMP_MSW_FIRST | GMP_BIG_ENDIAN);
+		// if first bit is 1, prepend full zero byte
+		// to represent positive two's complement
+		if (ord($bin[0]) & 0x80) {
+			$bin = chr(0x00) . $bin;
+		}
+		return $bin;
+	}
     
-    /**
-     * Encode negative integer to DER content.
-     *
-     * @param \GMP|resource $num
-     * @return string
-     */
-    private static function _encodeNegativeInteger(\GMP $num): string
-    {
-        $num = gmp_abs($num);
-        // compute number of bytes required
-        $width = 1;
-        if ($num > 128) {
-            $tmp = $num;
-            do {
-                $width++;
-                $tmp >>= 8;
-            } while ($tmp > 128);
-        }
-        // compute two's complement 2^n - x
-        $num = gmp_pow("2", 8 * $width) - $num;
-        $bin = gmp_export($num, 1, GMP_MSW_FIRST | GMP_BIG_ENDIAN);
-        // if first bit is 0, prepend full inverted byte
-        // to represent negative two's complement
-        if (!(ord($bin[0]) & 0x80)) {
-            $bin = chr(0xff) . $bin;
-        }
-        return $bin;
-    }
+	/**
+	 * Encode negative integer to DER content.
+	 *
+	 * @param \GMP|resource $num
+	 * @return string
+	 */
+	private static function _encodeNegativeInteger(\GMP $num): string
+	{
+		$num = gmp_abs($num);
+		// compute number of bytes required
+		$width = 1;
+		if ($num > 128) {
+			$tmp = $num;
+			do {
+				$width++;
+				$tmp >>= 8;
+			} while ($tmp > 128);
+		}
+		// compute two's complement 2^n - x
+		$num = gmp_pow("2", 8 * $width) - $num;
+		$bin = gmp_export($num, 1, GMP_MSW_FIRST | GMP_BIG_ENDIAN);
+		// if first bit is 0, prepend full inverted byte
+		// to represent negative two's complement
+		if (!(ord($bin[0]) & 0x80)) {
+			$bin = chr(0xff) . $bin;
+		}
+		return $bin;
+	}
     
-    /**
-     *
-     * {@inheritdoc}
-     * @return self
-     */
-    protected static function _decodeFromDER(Identifier $identifier, string $data,
-        int &$offset): ElementBase
-    {
-        $idx = $offset;
-        $length = Length::expectFromDER($data, $idx)->intLength();
-        $bytes = substr($data, $idx, $length);
-        $idx += $length;
-        $neg = ord($bytes[0]) & 0x80;
-        // negative, apply inversion of two's complement
-        if ($neg) {
-            $len = strlen($bytes);
-            for ($i = 0; $i < $len; $i++) {
-                $bytes[$i] = ~$bytes[$i];
-            }
-        }
-        $num = gmp_init(bin2hex($bytes), 16);
-        // negative, apply addition of two's complement
-        // and produce negative result
-        if ($neg) {
-            $num = gmp_neg($num + 1);
-        }
-        $offset = $idx;
-        // late static binding since enumerated extends integer type
-        return new static(gmp_strval($num, 10));
-    }
+	/**
+	 *
+	 * {@inheritdoc}
+	 * @return self
+	 */
+	protected static function _decodeFromDER(Identifier $identifier, string $data,
+		int &$offset): ElementBase
+	{
+		$idx = $offset;
+		$length = Length::expectFromDER($data, $idx)->intLength();
+		$bytes = substr($data, $idx, $length);
+		$idx += $length;
+		$neg = ord($bytes[0]) & 0x80;
+		// negative, apply inversion of two's complement
+		if ($neg) {
+			$len = strlen($bytes);
+			for ($i = 0; $i < $len; $i++) {
+				$bytes[$i] = ~$bytes[$i];
+			}
+		}
+		$num = gmp_init(bin2hex($bytes), 16);
+		// negative, apply addition of two's complement
+		// and produce negative result
+		if ($neg) {
+			$num = gmp_neg($num + 1);
+		}
+		$offset = $idx;
+		// late static binding since enumerated extends integer type
+		return new static(gmp_strval($num, 10));
+	}
     
-    /**
-     * Test that number is valid for this context.
-     *
-     * @param mixed $num
-     * @return bool
-     */
-    private static function _validateNumber($num): bool
-    {
-        if (is_int($num)) {
-            return true;
-        }
-        if (is_string($num) && preg_match('/-?\d+/', $num)) {
-            return true;
-        }
-        return false;
-    }
+	/**
+	 * Test that number is valid for this context.
+	 *
+	 * @param mixed $num
+	 * @return bool
+	 */
+	private static function _validateNumber($num): bool
+	{
+		if (is_int($num)) {
+			return true;
+		}
+		if (is_string($num) && preg_match('/-?\d+/', $num)) {
+			return true;
+		}
+		return false;
+	}
 }

Switch Indentation +5 added lines, -5 removed lines

@@ -71,11 +71,11 @@
         $num = $this->_number->gmpObj();
         switch (gmp_sign($num)) {
             // positive
-            case 1:
-                return self::_encodePositiveInteger($num);
-            // negative
-            case -1:
-                return self::_encodeNegativeInteger($num);
+        case 1:
+            return self::_encodePositiveInteger($num);
+        // negative
+        case -1:
+            return self::_encodeNegativeInteger($num);
         }
         // zero
         return "\0";

Spacing +1 added lines, -1 removed lines

@@ -92,7 +92,7 @@
      * @return self
      */
     protected static function _decodeFromDER(Identifier $identifier, string $data,
-        int &$offset): ElementBase
+        int & $offset): ElementBase
     {
         $idx = $offset;
         $length = Length::expectFromDER($data, $idx)->intLength();

lib/ASN1/Component/Identifier.php

Indentation +269 added lines, -269 removed lines

@@ -13,295 +13,295 @@
  */
 class Identifier implements Encodable
 {
-    // Type class enumerations
-    const CLASS_UNIVERSAL = 0b00;
-    const CLASS_APPLICATION = 0b01;
-    const CLASS_CONTEXT_SPECIFIC = 0b10;
-    const CLASS_PRIVATE = 0b11;
+	// Type class enumerations
+	const CLASS_UNIVERSAL = 0b00;
+	const CLASS_APPLICATION = 0b01;
+	const CLASS_CONTEXT_SPECIFIC = 0b10;
+	const CLASS_PRIVATE = 0b11;
     
-    /**
-     * Mapping from type class to human readable name.
-     *
-     * @internal
-     *
-     * @var array
-     */
-    const MAP_CLASS_TO_NAME = [ /* @formatter:off */
-        self::CLASS_UNIVERSAL => "UNIVERSAL", 
-        self::CLASS_APPLICATION => "APPLICATION", 
-        self::CLASS_CONTEXT_SPECIFIC => "CONTEXT SPECIFIC", 
-        self::CLASS_PRIVATE => "PRIVATE",
-        /* @formatter:on */
-    ];
+	/**
+	 * Mapping from type class to human readable name.
+	 *
+	 * @internal
+	 *
+	 * @var array
+	 */
+	const MAP_CLASS_TO_NAME = [ /* @formatter:off */
+		self::CLASS_UNIVERSAL => "UNIVERSAL", 
+		self::CLASS_APPLICATION => "APPLICATION", 
+		self::CLASS_CONTEXT_SPECIFIC => "CONTEXT SPECIFIC", 
+		self::CLASS_PRIVATE => "PRIVATE",
+		/* @formatter:on */
+	];
     
-    // P/C enumerations
-    const PRIMITIVE = 0b0;
-    const CONSTRUCTED = 0b1;
+	// P/C enumerations
+	const PRIMITIVE = 0b0;
+	const CONSTRUCTED = 0b1;
     
-    /**
-     * Type class.
-     *
-     * @var int
-     */
-    private $_class;
+	/**
+	 * Type class.
+	 *
+	 * @var int
+	 */
+	private $_class;
     
-    /**
-     * Primitive or Constructed.
-     *
-     * @var int
-     */
-    private $_pc;
+	/**
+	 * Primitive or Constructed.
+	 *
+	 * @var int
+	 */
+	private $_pc;
     
-    /**
-     * Content type tag.
-     *
-     * @var BigInt
-     */
-    private $_tag;
+	/**
+	 * Content type tag.
+	 *
+	 * @var BigInt
+	 */
+	private $_tag;
     
-    /**
-     * Constructor.
-     *
-     * @param int $class Type class
-     * @param int $pc Primitive / Constructed
-     * @param int|string $tag Type tag number
-     */
-    public function __construct(int $class, int $pc, $tag)
-    {
-        $this->_class = 0b11 & $class;
-        $this->_pc = 0b1 & $pc;
-        $this->_tag = new BigInt($tag);
-    }
+	/**
+	 * Constructor.
+	 *
+	 * @param int $class Type class
+	 * @param int $pc Primitive / Constructed
+	 * @param int|string $tag Type tag number
+	 */
+	public function __construct(int $class, int $pc, $tag)
+	{
+		$this->_class = 0b11 & $class;
+		$this->_pc = 0b1 & $pc;
+		$this->_tag = new BigInt($tag);
+	}
     
-    /**
-     * Decode identifier component from DER data.
-     *
-     * @param string $data DER encoded data
-     * @param int|null $offset Reference to the variable that contains offset
-     *        into the data where to start parsing. Variable is updated to
-     *        the offset next to the parsed identifier. If null, start from
-     *        offset 0.
-     * @throws DecodeException If decoding fails
-     * @return self
-     */
-    public static function fromDER(string $data, int &$offset = null): self
-    {
-        $idx = $offset ? $offset : 0;
-        $datalen = strlen($data);
-        if ($idx >= $datalen) {
-            throw new DecodeException("Invalid offset.");
-        }
-        $byte = ord($data[$idx++]);
-        // bits 8 and 7 (class)
-        // 0 = universal, 1 = application, 2 = context-specific, 3 = private
-        $class = (0b11000000 & $byte) >> 6;
-        // bit 6 (0 = primitive / 1 = constructed)
-        $pc = (0b00100000 & $byte) >> 5;
-        // bits 5 to 1 (tag number)
-        $tag = (0b00011111 & $byte);
-        // long-form identifier
-        if (0x1f == $tag) {
-            $tag = self::_decodeLongFormTag($data, $idx);
-        }
-        if (isset($offset)) {
-            $offset = $idx;
-        }
-        return new self($class, $pc, $tag);
-    }
+	/**
+	 * Decode identifier component from DER data.
+	 *
+	 * @param string $data DER encoded data
+	 * @param int|null $offset Reference to the variable that contains offset
+	 *        into the data where to start parsing. Variable is updated to
+	 *        the offset next to the parsed identifier. If null, start from
+	 *        offset 0.
+	 * @throws DecodeException If decoding fails
+	 * @return self
+	 */
+	public static function fromDER(string $data, int &$offset = null): self
+	{
+		$idx = $offset ? $offset : 0;
+		$datalen = strlen($data);
+		if ($idx >= $datalen) {
+			throw new DecodeException("Invalid offset.");
+		}
+		$byte = ord($data[$idx++]);
+		// bits 8 and 7 (class)
+		// 0 = universal, 1 = application, 2 = context-specific, 3 = private
+		$class = (0b11000000 & $byte) >> 6;
+		// bit 6 (0 = primitive / 1 = constructed)
+		$pc = (0b00100000 & $byte) >> 5;
+		// bits 5 to 1 (tag number)
+		$tag = (0b00011111 & $byte);
+		// long-form identifier
+		if (0x1f == $tag) {
+			$tag = self::_decodeLongFormTag($data, $idx);
+		}
+		if (isset($offset)) {
+			$offset = $idx;
+		}
+		return new self($class, $pc, $tag);
+	}
     
-    /**
-     * Parse long form tag.
-     *
-     * @param string $data DER data
-     * @param int $offset Reference to the variable containing offset to data
-     * @throws DecodeException If decoding fails
-     * @return string Tag number
-     */
-    private static function _decodeLongFormTag(string $data, int &$offset): string
-    {
-        $datalen = strlen($data);
-        $tag = gmp_init(0, 10);
-        while (true) {
-            if ($offset >= $datalen) {
-                throw new DecodeException(
-                    "Unexpected end of data while decoding" .
-                         " long form identifier.");
-            }
-            $byte = ord($data[$offset++]);
-            $tag <<= 7;
-            $tag |= 0x7f & $byte;
-            // last byte has bit 8 set to zero
-            if (!(0x80 & $byte)) {
-                break;
-            }
-        }
-        return gmp_strval($tag, 10);
-    }
+	/**
+	 * Parse long form tag.
+	 *
+	 * @param string $data DER data
+	 * @param int $offset Reference to the variable containing offset to data
+	 * @throws DecodeException If decoding fails
+	 * @return string Tag number
+	 */
+	private static function _decodeLongFormTag(string $data, int &$offset): string
+	{
+		$datalen = strlen($data);
+		$tag = gmp_init(0, 10);
+		while (true) {
+			if ($offset >= $datalen) {
+				throw new DecodeException(
+					"Unexpected end of data while decoding" .
+						 " long form identifier.");
+			}
+			$byte = ord($data[$offset++]);
+			$tag <<= 7;
+			$tag |= 0x7f & $byte;
+			// last byte has bit 8 set to zero
+			if (!(0x80 & $byte)) {
+				break;
+			}
+		}
+		return gmp_strval($tag, 10);
+	}
     
-    /**
-     *
-     * @see Encodable::toDER()
-     * @return string
-     */
-    public function toDER(): string
-    {
-        $bytes = [];
-        $byte = $this->_class << 6 | $this->_pc << 5;
-        $tag = $this->_tag->gmpObj();
-        if ($tag < 0x1f) {
-            $bytes[] = $byte | $tag;
-        } else { // long-form identifier
-            $bytes[] = $byte | 0x1f;
-            $octets = [];
-            for (; $tag > 0; $tag >>= 7) {
-                array_push($octets, gmp_intval(0x80 | ($tag & 0x7f)));
-            }
-            // last octet has bit 8 set to zero
-            $octets[0] &= 0x7f;
-            foreach (array_reverse($octets) as $octet) {
-                $bytes[] = $octet;
-            }
-        }
-        return pack("C*", ...$bytes);
-    }
+	/**
+	 *
+	 * @see Encodable::toDER()
+	 * @return string
+	 */
+	public function toDER(): string
+	{
+		$bytes = [];
+		$byte = $this->_class << 6 | $this->_pc << 5;
+		$tag = $this->_tag->gmpObj();
+		if ($tag < 0x1f) {
+			$bytes[] = $byte | $tag;
+		} else { // long-form identifier
+			$bytes[] = $byte | 0x1f;
+			$octets = [];
+			for (; $tag > 0; $tag >>= 7) {
+				array_push($octets, gmp_intval(0x80 | ($tag & 0x7f)));
+			}
+			// last octet has bit 8 set to zero
+			$octets[0] &= 0x7f;
+			foreach (array_reverse($octets) as $octet) {
+				$bytes[] = $octet;
+			}
+		}
+		return pack("C*", ...$bytes);
+	}
     
-    /**
-     * Get class of the type.
-     *
-     * @return int
-     */
-    public function typeClass(): int
-    {
-        return $this->_class;
-    }
+	/**
+	 * Get class of the type.
+	 *
+	 * @return int
+	 */
+	public function typeClass(): int
+	{
+		return $this->_class;
+	}
     
-    /**
-     * Get P/C.
-     *
-     * @return int
-     */
-    public function pc(): int
-    {
-        return $this->_pc;
-    }
+	/**
+	 * Get P/C.
+	 *
+	 * @return int
+	 */
+	public function pc(): int
+	{
+		return $this->_pc;
+	}
     
-    /**
-     * Get the tag number.
-     *
-     * @return string Base 10 integer string
-     */
-    public function tag(): string
-    {
-        return $this->_tag->base10();
-    }
+	/**
+	 * Get the tag number.
+	 *
+	 * @return string Base 10 integer string
+	 */
+	public function tag(): string
+	{
+		return $this->_tag->base10();
+	}
     
-    /**
-     * Get the tag as an integer.
-     *
-     * @return int
-     */
-    public function intTag(): int
-    {
-        return $this->_tag->intVal();
-    }
+	/**
+	 * Get the tag as an integer.
+	 *
+	 * @return int
+	 */
+	public function intTag(): int
+	{
+		return $this->_tag->intVal();
+	}
     
-    /**
-     * Check whether type is of an universal class.
-     *
-     * @return boolean
-     */
-    public function isUniversal(): bool
-    {
-        return self::CLASS_UNIVERSAL == $this->_class;
-    }
+	/**
+	 * Check whether type is of an universal class.
+	 *
+	 * @return boolean
+	 */
+	public function isUniversal(): bool
+	{
+		return self::CLASS_UNIVERSAL == $this->_class;
+	}
     
-    /**
-     * Check whether type is of an application class.
-     *
-     * @return boolean
-     */
-    public function isApplication(): bool
-    {
-        return self::CLASS_APPLICATION == $this->_class;
-    }
+	/**
+	 * Check whether type is of an application class.
+	 *
+	 * @return boolean
+	 */
+	public function isApplication(): bool
+	{
+		return self::CLASS_APPLICATION == $this->_class;
+	}
     
-    /**
-     * Check whether type is of a context specific class.
-     *
-     * @return boolean
-     */
-    public function isContextSpecific(): bool
-    {
-        return self::CLASS_CONTEXT_SPECIFIC == $this->_class;
-    }
+	/**
+	 * Check whether type is of a context specific class.
+	 *
+	 * @return boolean
+	 */
+	public function isContextSpecific(): bool
+	{
+		return self::CLASS_CONTEXT_SPECIFIC == $this->_class;
+	}
     
-    /**
-     * Check whether type is of a private class.
-     *
-     * @return boolean
-     */
-    public function isPrivate(): bool
-    {
-        return self::CLASS_PRIVATE == $this->_class;
-    }
+	/**
+	 * Check whether type is of a private class.
+	 *
+	 * @return boolean
+	 */
+	public function isPrivate(): bool
+	{
+		return self::CLASS_PRIVATE == $this->_class;
+	}
     
-    /**
-     * Check whether content is primitive type.
-     *
-     * @return boolean
-     */
-    public function isPrimitive(): bool
-    {
-        return self::PRIMITIVE == $this->_pc;
-    }
+	/**
+	 * Check whether content is primitive type.
+	 *
+	 * @return boolean
+	 */
+	public function isPrimitive(): bool
+	{
+		return self::PRIMITIVE == $this->_pc;
+	}
     
-    /**
-     * Check hether content is constructed type.
-     *
-     * @return boolean
-     */
-    public function isConstructed(): bool
-    {
-        return self::CONSTRUCTED == $this->_pc;
-    }
+	/**
+	 * Check hether content is constructed type.
+	 *
+	 * @return boolean
+	 */
+	public function isConstructed(): bool
+	{
+		return self::CONSTRUCTED == $this->_pc;
+	}
     
-    /**
-     * Get self with given type class.
-     *
-     * @param int $class One of <code>CLASS_*</code> enumerations
-     * @return self
-     */
-    public function withClass(int $class): self
-    {
-        $obj = clone $this;
-        $obj->_class = $class;
-        return $obj;
-    }
+	/**
+	 * Get self with given type class.
+	 *
+	 * @param int $class One of <code>CLASS_*</code> enumerations
+	 * @return self
+	 */
+	public function withClass(int $class): self
+	{
+		$obj = clone $this;
+		$obj->_class = $class;
+		return $obj;
+	}
     
-    /**
-     * Get self with given type tag.
-     *
-     * @param int|string $tag Tag number
-     * @return self
-     */
-    public function withTag($tag): self
-    {
-        $obj = clone $this;
-        $obj->_tag = new BigInt($tag);
-        return $obj;
-    }
+	/**
+	 * Get self with given type tag.
+	 *
+	 * @param int|string $tag Tag number
+	 * @return self
+	 */
+	public function withTag($tag): self
+	{
+		$obj = clone $this;
+		$obj->_tag = new BigInt($tag);
+		return $obj;
+	}
     
-    /**
-     * Get human readable name of the type class.
-     *
-     * @param int $class
-     * @return string
-     */
-    public static function classToName(int $class): string
-    {
-        if (!array_key_exists($class, self::MAP_CLASS_TO_NAME)) {
-            return "CLASS $class";
-        }
-        return self::MAP_CLASS_TO_NAME[$class];
-    }
+	/**
+	 * Get human readable name of the type class.
+	 *
+	 * @param int $class
+	 * @return string
+	 */
+	public static function classToName(int $class): string
+	{
+		if (!array_key_exists($class, self::MAP_CLASS_TO_NAME)) {
+			return "CLASS $class";
+		}
+		return self::MAP_CLASS_TO_NAME[$class];
+	}
 }

lib/ASN1/Component/Length.php

Indentation +193 added lines, -193 removed lines

@@ -13,206 +13,206 @@
  */
 class Length implements Encodable
 {
-    /**
-     * Length.
-     *
-     * @var BigInt
-     */
-    private $_length;
+	/**
+	 * Length.
+	 *
+	 * @var BigInt
+	 */
+	private $_length;
     
-    /**
-     * Whether length is indefinite.
-     *
-     * @var boolean
-     */
-    private $_indefinite;
+	/**
+	 * Whether length is indefinite.
+	 *
+	 * @var boolean
+	 */
+	private $_indefinite;
     
-    /**
-     * Constructor.
-     *
-     * @param int|string $length Length
-     * @param boolean $indefinite Whether length is indefinite
-     */
-    public function __construct($length, bool $indefinite = false)
-    {
-        $this->_length = new BigInt($length);
-        $this->_indefinite = $indefinite;
-    }
+	/**
+	 * Constructor.
+	 *
+	 * @param int|string $length Length
+	 * @param boolean $indefinite Whether length is indefinite
+	 */
+	public function __construct($length, bool $indefinite = false)
+	{
+		$this->_length = new BigInt($length);
+		$this->_indefinite = $indefinite;
+	}
     
-    /**
-     * Decode length component from DER data.
-     *
-     * @param string $data DER encoded data
-     * @param int|null $offset Reference to the variable that contains offset
-     *        into the data where to start parsing. Variable is updated to
-     *        the offset next to the parsed length component. If null, start
-     *        from offset 0.
-     * @throws DecodeException If decoding fails
-     * @return self
-     */
-    public static function fromDER(string $data, int &$offset = null): self
-    {
-        $idx = $offset ? $offset : 0;
-        $datalen = strlen($data);
-        if ($idx >= $datalen) {
-            throw new DecodeException("Invalid offset.");
-        }
-        $indefinite = false;
-        $byte = ord($data[$idx++]);
-        // bits 7 to 1
-        $length = (0x7f & $byte);
-        // long form
-        if (0x80 & $byte) {
-            if (!$length) {
-                $indefinite = true;
-            } else {
-                if ($idx + $length > $datalen) {
-                    throw new DecodeException("Too many length octets.");
-                }
-                $length = self::_decodeLongFormLength($length, $data, $idx);
-            }
-        }
-        if (isset($offset)) {
-            $offset = $idx;
-        }
-        return new self($length, $indefinite);
-    }
+	/**
+	 * Decode length component from DER data.
+	 *
+	 * @param string $data DER encoded data
+	 * @param int|null $offset Reference to the variable that contains offset
+	 *        into the data where to start parsing. Variable is updated to
+	 *        the offset next to the parsed length component. If null, start
+	 *        from offset 0.
+	 * @throws DecodeException If decoding fails
+	 * @return self
+	 */
+	public static function fromDER(string $data, int &$offset = null): self
+	{
+		$idx = $offset ? $offset : 0;
+		$datalen = strlen($data);
+		if ($idx >= $datalen) {
+			throw new DecodeException("Invalid offset.");
+		}
+		$indefinite = false;
+		$byte = ord($data[$idx++]);
+		// bits 7 to 1
+		$length = (0x7f & $byte);
+		// long form
+		if (0x80 & $byte) {
+			if (!$length) {
+				$indefinite = true;
+			} else {
+				if ($idx + $length > $datalen) {
+					throw new DecodeException("Too many length octets.");
+				}
+				$length = self::_decodeLongFormLength($length, $data, $idx);
+			}
+		}
+		if (isset($offset)) {
+			$offset = $idx;
+		}
+		return new self($length, $indefinite);
+	}
     
-    /**
-     * Decode long form length.
-     *
-     * @param int $length Number of octets
-     * @param string $data Data
-     * @param int $offset Reference to the variable containing offset to the
-     *        data.
-     * @throws DecodeException If decoding fails
-     * @return string Integer as a string
-     */
-    private static function _decodeLongFormLength(int $length, string $data,
-        int &$offset): string
-    {
-        // first octet must not be 0xff (spec 8.1.3.5c)
-        if ($length == 127) {
-            throw new DecodeException("Invalid number of length octets.");
-        }
-        $num = gmp_init(0, 10);
-        while (--$length >= 0) {
-            $byte = ord($data[$offset++]);
-            $num <<= 8;
-            $num |= $byte;
-        }
-        return gmp_strval($num);
-    }
+	/**
+	 * Decode long form length.
+	 *
+	 * @param int $length Number of octets
+	 * @param string $data Data
+	 * @param int $offset Reference to the variable containing offset to the
+	 *        data.
+	 * @throws DecodeException If decoding fails
+	 * @return string Integer as a string
+	 */
+	private static function _decodeLongFormLength(int $length, string $data,
+		int &$offset): string
+	{
+		// first octet must not be 0xff (spec 8.1.3.5c)
+		if ($length == 127) {
+			throw new DecodeException("Invalid number of length octets.");
+		}
+		$num = gmp_init(0, 10);
+		while (--$length >= 0) {
+			$byte = ord($data[$offset++]);
+			$num <<= 8;
+			$num |= $byte;
+		}
+		return gmp_strval($num);
+	}
     
-    /**
-     * Decode length from DER.
-     *
-     * Throws an exception if length doesn't match with expected or if data
-     * doesn't contain enough bytes.
-     *
-     * @see self::fromDER
-     * @param string $data DER data
-     * @param int $offset Reference to the offset variable
-     * @param int|null $expected Expected length, null to bypass checking
-     * @throws DecodeException If decoding or expectation fails
-     * @return self
-     */
-    public static function expectFromDER(string $data, int &$offset,
-        int $expected = null): self
-    {
-        $idx = $offset;
-        $length = self::fromDER($data, $idx);
-        // DER encoding must have definite length (spec 10.1)
-        if ($length->isIndefinite()) {
-            throw new DecodeException("DER encoding must have definite length.");
-        }
-        // if certain length was expected
-        if (isset($expected) && $expected != $length->intLength()) {
-            throw new DecodeException(
-                sprintf("Expected length %d, got %d.", $expected,
-                    $length->intLength()));
-        }
-        // check that enough data is available
-        if (strlen($data) < $idx + $length->intLength()) {
-            throw new DecodeException(
-                sprintf("Length %d overflows data, %d bytes left.",
-                    $length->intLength(), strlen($data) - $idx));
-        }
-        $offset = $idx;
-        return $length;
-    }
+	/**
+	 * Decode length from DER.
+	 *
+	 * Throws an exception if length doesn't match with expected or if data
+	 * doesn't contain enough bytes.
+	 *
+	 * @see self::fromDER
+	 * @param string $data DER data
+	 * @param int $offset Reference to the offset variable
+	 * @param int|null $expected Expected length, null to bypass checking
+	 * @throws DecodeException If decoding or expectation fails
+	 * @return self
+	 */
+	public static function expectFromDER(string $data, int &$offset,
+		int $expected = null): self
+	{
+		$idx = $offset;
+		$length = self::fromDER($data, $idx);
+		// DER encoding must have definite length (spec 10.1)
+		if ($length->isIndefinite()) {
+			throw new DecodeException("DER encoding must have definite length.");
+		}
+		// if certain length was expected
+		if (isset($expected) && $expected != $length->intLength()) {
+			throw new DecodeException(
+				sprintf("Expected length %d, got %d.", $expected,
+					$length->intLength()));
+		}
+		// check that enough data is available
+		if (strlen($data) < $idx + $length->intLength()) {
+			throw new DecodeException(
+				sprintf("Length %d overflows data, %d bytes left.",
+					$length->intLength(), strlen($data) - $idx));
+		}
+		$offset = $idx;
+		return $length;
+	}
     
-    /**
-     *
-     * @see Encodable::toDER()
-     * @throws \DomainException If length is too large to encode
-     * @return string
-     */
-    public function toDER(): string
-    {
-        $bytes = [];
-        if ($this->_indefinite) {
-            $bytes[] = 0x80;
-        } else {
-            $num = $this->_length->gmpObj();
-            // long form
-            if ($num > 127) {
-                $octets = [];
-                for (; $num > 0; $num >>= 8) {
-                    $octets[] = gmp_intval(0xff & $num);
-                }
-                $count = count($octets);
-                // first octet must not be 0xff
-                if ($count >= 127) {
-                    throw new \DomainException("Too many length octets.");
-                }
-                $bytes[] = 0x80 | $count;
-                foreach (array_reverse($octets) as $octet) {
-                    $bytes[] = $octet;
-                }
-            } else { // short form
-                $bytes[] = gmp_intval($num);
-            }
-        }
-        return pack("C*", ...$bytes);
-    }
+	/**
+	 *
+	 * @see Encodable::toDER()
+	 * @throws \DomainException If length is too large to encode
+	 * @return string
+	 */
+	public function toDER(): string
+	{
+		$bytes = [];
+		if ($this->_indefinite) {
+			$bytes[] = 0x80;
+		} else {
+			$num = $this->_length->gmpObj();
+			// long form
+			if ($num > 127) {
+				$octets = [];
+				for (; $num > 0; $num >>= 8) {
+					$octets[] = gmp_intval(0xff & $num);
+				}
+				$count = count($octets);
+				// first octet must not be 0xff
+				if ($count >= 127) {
+					throw new \DomainException("Too many length octets.");
+				}
+				$bytes[] = 0x80 | $count;
+				foreach (array_reverse($octets) as $octet) {
+					$bytes[] = $octet;
+				}
+			} else { // short form
+				$bytes[] = gmp_intval($num);
+			}
+		}
+		return pack("C*", ...$bytes);
+	}
     
-    /**
-     * Get the length.
-     *
-     * @throws \LogicException If length is indefinite
-     * @return string Length as an integer string
-     */
-    public function length(): string
-    {
-        if ($this->_indefinite) {
-            throw new \LogicException("Length is indefinite.");
-        }
-        return $this->_length->base10();
-    }
+	/**
+	 * Get the length.
+	 *
+	 * @throws \LogicException If length is indefinite
+	 * @return string Length as an integer string
+	 */
+	public function length(): string
+	{
+		if ($this->_indefinite) {
+			throw new \LogicException("Length is indefinite.");
+		}
+		return $this->_length->base10();
+	}
     
-    /**
-     * Get the length as an integer.
-     *
-     * @throws \LogicException If length is indefinite
-     * @throws \RuntimeException If length overflows integer size
-     * @return int
-     */
-    public function intLength(): int
-    {
-        if ($this->_indefinite) {
-            throw new \LogicException("Length is indefinite.");
-        }
-        return $this->_length->intVal();
-    }
+	/**
+	 * Get the length as an integer.
+	 *
+	 * @throws \LogicException If length is indefinite
+	 * @throws \RuntimeException If length overflows integer size
+	 * @return int
+	 */
+	public function intLength(): int
+	{
+		if ($this->_indefinite) {
+			throw new \LogicException("Length is indefinite.");
+		}
+		return $this->_length->intVal();
+	}
     
-    /**
-     * Whether length is indefinite.
-     *
-     * @return boolean
-     */
-    public function isIndefinite(): bool
-    {
-        return $this->_indefinite;
-    }
+	/**
+	 * Whether length is indefinite.
+	 *
+	 * @return boolean
+	 */
+	public function isIndefinite(): bool
+	{
+		return $this->_indefinite;
+	}
 }

lib/ASN1/Util/BigInt.php

Indentation +94 added lines, -94 removed lines

@@ -6,106 +6,106 @@
 
 class BigInt
 {
-    /**
-     * Number as a base10 integer string.
-     *
-     * @var string
-     */
-    private $_num;
+	/**
+	 * Number as a base10 integer string.
+	 *
+	 * @var string
+	 */
+	private $_num;
     
-    /**
-     * Number as an integer type.
-     *
-     * @internal Lazily initialized
-     * @var int|null
-     */
-    private $_intNum;
+	/**
+	 * Number as an integer type.
+	 *
+	 * @internal Lazily initialized
+	 * @var int|null
+	 */
+	private $_intNum;
     
-    /**
-     * Constructor.
-     *
-     * @param string|int $num
-     */
-    public function __construct($num)
-    {
-        $this->_num = strval($num);
-    }
+	/**
+	 * Constructor.
+	 *
+	 * @param string|int $num
+	 */
+	public function __construct($num)
+	{
+		$this->_num = strval($num);
+	}
     
-    /**
-     * Get the number as a base10 integer string.
-     *
-     * @return string
-     */
-    public function base10(): string
-    {
-        return $this->_num;
-    }
+	/**
+	 * Get the number as a base10 integer string.
+	 *
+	 * @return string
+	 */
+	public function base10(): string
+	{
+		return $this->_num;
+	}
     
-    /**
-     * Get the number as an integer.
-     *
-     * @throws \RuntimeException If number overflows integer size
-     * @return int
-     */
-    public function intVal(): int
-    {
-        if (!isset($this->_intNum)) {
-            $num = gmp_init($this->_num, 10);
-            if (gmp_cmp($num, $this->_intMaxGmp()) > 0) {
-                throw new \RuntimeException("Integer overflow.");
-            }
-            if (gmp_cmp($num, $this->_intMinGmp()) < 0) {
-                throw new \RuntimeException("Integer underflow.");
-            }
-            $this->_intNum = gmp_intval($num);
-        }
-        return $this->_intNum;
-    }
+	/**
+	 * Get the number as an integer.
+	 *
+	 * @throws \RuntimeException If number overflows integer size
+	 * @return int
+	 */
+	public function intVal(): int
+	{
+		if (!isset($this->_intNum)) {
+			$num = gmp_init($this->_num, 10);
+			if (gmp_cmp($num, $this->_intMaxGmp()) > 0) {
+				throw new \RuntimeException("Integer overflow.");
+			}
+			if (gmp_cmp($num, $this->_intMinGmp()) < 0) {
+				throw new \RuntimeException("Integer underflow.");
+			}
+			$this->_intNum = gmp_intval($num);
+		}
+		return $this->_intNum;
+	}
     
-    /**
-     * Get the maximum integer value.
-     *
-     * @return \GMP
-     */
-    private function _intMaxGmp(): \GMP
-    {
-        static $gmp;
-        if (!isset($gmp)) {
-            $gmp = gmp_init(PHP_INT_MAX, 10);
-        }
-        return $gmp;
-    }
+	/**
+	 * Get the maximum integer value.
+	 *
+	 * @return \GMP
+	 */
+	private function _intMaxGmp(): \GMP
+	{
+		static $gmp;
+		if (!isset($gmp)) {
+			$gmp = gmp_init(PHP_INT_MAX, 10);
+		}
+		return $gmp;
+	}
     
-    /**
-     * Get the minimum integer value.
-     *
-     * @return \GMP
-     */
-    private function _intMinGmp(): \GMP
-    {
-        static $gmp;
-        if (!isset($gmp)) {
-            $gmp = gmp_init(PHP_INT_MIN, 10);
-        }
-        return $gmp;
-    }
+	/**
+	 * Get the minimum integer value.
+	 *
+	 * @return \GMP
+	 */
+	private function _intMinGmp(): \GMP
+	{
+		static $gmp;
+		if (!isset($gmp)) {
+			$gmp = gmp_init(PHP_INT_MIN, 10);
+		}
+		return $gmp;
+	}
     
-    /**
-     * Get the number as a GMP object.
-     *
-     * @return \GMP
-     */
-    public function gmpObj(): \GMP
-    {
-        return gmp_init($this->_num, 10);
-    }
+	/**
+	 * Get the number as a GMP object.
+	 *
+	 * @return \GMP
+	 */
+	public function gmpObj(): \GMP
+	{
+		return gmp_init($this->_num, 10);
+	}
     
-    /**
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        return $this->base10();
-    }
+	/**
+	 *
+	 * @return string
+	 */
+	public function __toString()
+	{
+		return $this->base10();
+	}
 }

lib/ASN1/Util/Flags.php

Indentation +129 added lines, -129 removed lines

@@ -11,141 +11,141 @@
  */
 class Flags
 {
-    /**
-     * Flag octets.
-     *
-     * @var string $_flags
-     */
-    protected $_flags;
+	/**
+	 * Flag octets.
+	 *
+	 * @var string $_flags
+	 */
+	protected $_flags;
     
-    /**
-     * Number of flags.
-     *
-     * @var int $_width
-     */
-    protected $_width;
+	/**
+	 * Number of flags.
+	 *
+	 * @var int $_width
+	 */
+	protected $_width;
     
-    /**
-     * Constructor.
-     *
-     * @param int|string $flags Flags
-     * @param int $width The number of flags. If width is larger than number of
-     *        bits in $flags, zeroes are prepended to flag field.
-     */
-    public function __construct($flags, int $width)
-    {
-        if (!$width) {
-            $this->_flags = "";
-        } else {
-            // calculate number of unused bits in last octet
-            $last_octet_bits = $width % 8;
-            $unused_bits = $last_octet_bits ? 8 - $last_octet_bits : 0;
-            $num = gmp_init($flags);
-            // mask bits outside bitfield width
-            $mask = gmp_sub(gmp_init(1) << $width, 1);
-            $num &= $mask;
-            // shift towards MSB if needed
-            $data = gmp_export($num << $unused_bits, 1,
-                GMP_MSW_FIRST | GMP_BIG_ENDIAN);
-            $octets = unpack("C*", $data);
-            $bits = count($octets) * 8;
-            // pad with zeroes
-            while ($bits < $width) {
-                array_unshift($octets, 0);
-                $bits += 8;
-            }
-            $this->_flags = pack("C*", ...$octets);
-        }
-        $this->_width = $width;
-    }
+	/**
+	 * Constructor.
+	 *
+	 * @param int|string $flags Flags
+	 * @param int $width The number of flags. If width is larger than number of
+	 *        bits in $flags, zeroes are prepended to flag field.
+	 */
+	public function __construct($flags, int $width)
+	{
+		if (!$width) {
+			$this->_flags = "";
+		} else {
+			// calculate number of unused bits in last octet
+			$last_octet_bits = $width % 8;
+			$unused_bits = $last_octet_bits ? 8 - $last_octet_bits : 0;
+			$num = gmp_init($flags);
+			// mask bits outside bitfield width
+			$mask = gmp_sub(gmp_init(1) << $width, 1);
+			$num &= $mask;
+			// shift towards MSB if needed
+			$data = gmp_export($num << $unused_bits, 1,
+				GMP_MSW_FIRST | GMP_BIG_ENDIAN);
+			$octets = unpack("C*", $data);
+			$bits = count($octets) * 8;
+			// pad with zeroes
+			while ($bits < $width) {
+				array_unshift($octets, 0);
+				$bits += 8;
+			}
+			$this->_flags = pack("C*", ...$octets);
+		}
+		$this->_width = $width;
+	}
     
-    /**
-     * Initialize from BitString.
-     *
-     * @param BitString $bs
-     * @param int $width
-     * @return self
-     */
-    public static function fromBitString(BitString $bs, int $width): self
-    {
-        $num_bits = $bs->numBits();
-        $num = gmp_import($bs->string(), 1, GMP_MSW_FIRST | GMP_BIG_ENDIAN);
-        $num >>= $bs->unusedBits();
-        if ($num_bits < $width) {
-            $num <<= ($width - $num_bits);
-        }
-        return new self(gmp_strval($num, 10), $width);
-    }
+	/**
+	 * Initialize from BitString.
+	 *
+	 * @param BitString $bs
+	 * @param int $width
+	 * @return self
+	 */
+	public static function fromBitString(BitString $bs, int $width): self
+	{
+		$num_bits = $bs->numBits();
+		$num = gmp_import($bs->string(), 1, GMP_MSW_FIRST | GMP_BIG_ENDIAN);
+		$num >>= $bs->unusedBits();
+		if ($num_bits < $width) {
+			$num <<= ($width - $num_bits);
+		}
+		return new self(gmp_strval($num, 10), $width);
+	}
     
-    /**
-     * Check whether a bit at given index is set.
-     * Index 0 is the leftmost bit.
-     *
-     * @param int $idx
-     * @throws \OutOfBoundsException
-     * @return bool
-     */
-    public function test(int $idx): bool
-    {
-        if ($idx >= $this->_width) {
-            throw new \OutOfBoundsException("Index is out of bounds.");
-        }
-        // octet index
-        $oi = (int) floor($idx / 8);
-        $byte = $this->_flags[$oi];
-        // bit index
-        $bi = $idx % 8;
-        // index 0 is the most significant bit in byte
-        $mask = 0x01 << (7 - $bi);
-        return (ord($byte) & $mask) > 0;
-    }
+	/**
+	 * Check whether a bit at given index is set.
+	 * Index 0 is the leftmost bit.
+	 *
+	 * @param int $idx
+	 * @throws \OutOfBoundsException
+	 * @return bool
+	 */
+	public function test(int $idx): bool
+	{
+		if ($idx >= $this->_width) {
+			throw new \OutOfBoundsException("Index is out of bounds.");
+		}
+		// octet index
+		$oi = (int) floor($idx / 8);
+		$byte = $this->_flags[$oi];
+		// bit index
+		$bi = $idx % 8;
+		// index 0 is the most significant bit in byte
+		$mask = 0x01 << (7 - $bi);
+		return (ord($byte) & $mask) > 0;
+	}
     
-    /**
-     * Get flags as an octet string.
-     * Zeroes are appended to the last octet if width is not divisible by 8.
-     *
-     * @return string
-     */
-    public function string(): string
-    {
-        return $this->_flags;
-    }
+	/**
+	 * Get flags as an octet string.
+	 * Zeroes are appended to the last octet if width is not divisible by 8.
+	 *
+	 * @return string
+	 */
+	public function string(): string
+	{
+		return $this->_flags;
+	}
     
-    /**
-     * Get flags as a base 10 integer.
-     *
-     * @return string Integer as a string
-     */
-    public function number(): string
-    {
-        $num = gmp_import($this->_flags, 1, GMP_MSW_FIRST | GMP_BIG_ENDIAN);
-        $last_octet_bits = $this->_width % 8;
-        $unused_bits = $last_octet_bits ? 8 - $last_octet_bits : 0;
-        $num >>= $unused_bits;
-        return gmp_strval($num, 10);
-    }
+	/**
+	 * Get flags as a base 10 integer.
+	 *
+	 * @return string Integer as a string
+	 */
+	public function number(): string
+	{
+		$num = gmp_import($this->_flags, 1, GMP_MSW_FIRST | GMP_BIG_ENDIAN);
+		$last_octet_bits = $this->_width % 8;
+		$unused_bits = $last_octet_bits ? 8 - $last_octet_bits : 0;
+		$num >>= $unused_bits;
+		return gmp_strval($num, 10);
+	}
     
-    /**
-     * Get flags as an integer.
-     *
-     * @return int
-     */
-    public function intNumber(): int
-    {
-        $num = new BigInt($this->number());
-        return $num->intVal();
-    }
+	/**
+	 * Get flags as an integer.
+	 *
+	 * @return int
+	 */
+	public function intNumber(): int
+	{
+		$num = new BigInt($this->number());
+		return $num->intVal();
+	}
     
-    /**
-     * Get flags as a BitString.
-     * Unused bits are set accordingly. Trailing zeroes are not stripped.
-     *
-     * @return BitString
-     */
-    public function bitString(): BitString
-    {
-        $last_octet_bits = $this->_width % 8;
-        $unused_bits = $last_octet_bits ? 8 - $last_octet_bits : 0;
-        return new BitString($this->_flags, $unused_bits);
-    }
+	/**
+	 * Get flags as a BitString.
+	 * Unused bits are set accordingly. Trailing zeroes are not stripped.
+	 *
+	 * @return BitString
+	 */
+	public function bitString(): BitString
+	{
+		$last_octet_bits = $this->_width % 8;
+		$unused_bits = $last_octet_bits ? 8 - $last_octet_bits : 0;
+		return new BitString($this->_flags, $unused_bits);
+	}
 }