asn.cpp File Reference

#include "pch.h"
#include "config.h"
#include "asn.h"
#include <iomanip>
#include <time.h>

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Functions
size_t	DERLengthEncode (BufferedTransformation &bt, lword length)
	DER Length. More...
bool	BERLengthDecode (BufferedTransformation &bt, lword &length, bool &definiteLength)
bool	BERLengthDecode (BufferedTransformation &bt, size_t &length)
	BER decode a length. More...
void	DEREncodeNull (BufferedTransformation &out)
	DER encode NULL. More...
void	BERDecodeNull (BufferedTransformation &in)
	BER decode NULL. More...
size_t	DEREncodeOctetString (BufferedTransformation &bt, const byte *str, size_t strLen)
	ASN Strings. More...
size_t	DEREncodeOctetString (BufferedTransformation &bt, const SecByteBlock &str)
	DER encode octet string. More...
size_t	BERDecodeOctetString (BufferedTransformation &bt, SecByteBlock &str)
	BER decode octet string. More...
size_t	BERDecodeOctetString (BufferedTransformation &bt, BufferedTransformation &str)
	BER decode octet string. More...
size_t	DEREncodeTextString (BufferedTransformation &bt, const std::string &str, byte asnTag)
	DER encode text string. More...
size_t	BERDecodeTextString (BufferedTransformation &bt, std::string &str, byte asnTag)
	BER decode text string. More...
size_t	DEREncodeBitString (BufferedTransformation &bt, const byte *str, size_t strLen, unsigned int unusedBits)
	ASN BitString. More...
size_t	BERDecodeBitString (BufferedTransformation &bt, SecByteBlock &str, unsigned int &unusedBits)
	DER decode bit string. More...
void	DERReencode (BufferedTransformation &source, BufferedTransformation &dest)
	BER decode and DER re-encode. More...

Function Documentation

size_t BERDecodeBitString	(	BufferedTransformation &	bt,
		SecByteBlock &	str,
		unsigned int &	unusedBits
	)

DER decode bit string.

Parameters

bt	BufferedTransformation object for reading
str	the decoded string
unusedBits	the number of unused bits

Definition at line 188 of file asn.cpp.

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void BERDecodeNull

(

BufferedTransformation &

bt

)

BER decode NULL.

Parameters

bt	BufferedTransformation object for reading

Definition at line 93 of file asn.cpp.

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size_t BERDecodeOctetString	(	BufferedTransformation &	bt,
		SecByteBlock &	str
	)

BER decode octet string.

Parameters

bt	BufferedTransformation object for reading
str	the decoded string

Returns

the number of octets used for the encoding

Definition at line 117 of file asn.cpp.

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size_t BERDecodeOctetString	(	BufferedTransformation &	bt,
		BufferedTransformation &	str
	)

BER decode octet string.

Parameters

bt	BufferedTransformation object for reading
str	the decoded string

Returns

the number of octets used for the encoding

Definition at line 135 of file asn.cpp.

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size_t BERDecodeTextString	(	BufferedTransformation &	bt,
		std::string &	str,
		byte	asnTag
	)

BER decode text string.

Parameters

bt	BufferedTransformation object for reading
str	the string to encode
asnTag	the ASN.1 type

DEREncodeTextString() can be used for UTF8_STRING, PRINTABLE_STRING, and IA5_STRING

Definition at line 159 of file asn.cpp.

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bool BERLengthDecode	(	BufferedTransformation &	bt,
		lword &	length,
		bool &	definiteLength
	)

Definition at line 38 of file asn.cpp.

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bool BERLengthDecode	(	BufferedTransformation &	bt,
		size_t &	length
	)

BER decode a length.

Parameters

bt	BufferedTransformation object for reading
length	the decoded size

Returns

true if the value was decoded

Exceptions

BERDecodeError

if the value fails to decode or is too large for size_t

BERLengthDecode() returns false if the encoding is indefinite length.

Definition at line 76 of file asn.cpp.

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size_t DEREncodeBitString	(	BufferedTransformation &	bt,
		const byte *	str,
		size_t	strLen,
		unsigned int	unusedBits
	)

ASN BitString.

DER encode bit string.

Definition at line 179 of file asn.cpp.

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void DEREncodeNull

(

BufferedTransformation &

bt

)

DER encode NULL.

Parameters

bt	BufferedTransformation object for writing

Definition at line 87 of file asn.cpp.

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size_t DEREncodeOctetString	(	BufferedTransformation &	bt,
		const byte *	str,
		size_t	strLen
	)

ASN Strings.

DER encode octet string.

Definition at line 104 of file asn.cpp.

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size_t DEREncodeOctetString	(	BufferedTransformation &	bt,
		const SecByteBlock &	str
	)

DER encode octet string.

Parameters

bt	BufferedTransformation object for reading
str	the string to encode

Returns

the number of octets used for the encoding

Definition at line 112 of file asn.cpp.

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size_t DEREncodeTextString	(	BufferedTransformation &	bt,
		const std::string &	str,
		byte	asnTag
	)

DER encode text string.

Parameters

bt	BufferedTransformation object for writing
str	the string to encode
asnTag	the ASN.1 type

Returns

the number of octets used for the encoding

DEREncodeTextString() can be used for UTF8_STRING, PRINTABLE_STRING, and IA5_STRING

Definition at line 151 of file asn.cpp.

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size_t DERLengthEncode	(	BufferedTransformation &	bt,
		lword	length
	)

DER Length.

DER encode a length.

Definition at line 17 of file asn.cpp.

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void DERReencode	(	BufferedTransformation &	bt,
		BufferedTransformation &	dest
	)

BER decode and DER re-encode.

Parameters

bt	BufferedTransformation object for writing
dest	BufferedTransformation object

Definition at line 213 of file asn.cpp.

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