PKIFCryptoPPExternalDigest Class Reference
#include <PKIFCryptoPPExternalDigest.h>
Detailed Description
This HashTransformation subclass lets crypto++ use digests that have been calculated externally for signature verification. Though this seems like we're unduly mucking with the internals, it relieves us of the need to sling a context for sig verification about and allows the crypto++ colleague to use the same API as all the other crypto back-ends. Crypto++ still checks signature formatting and padding, so this doesn't introduce and issue on that side.TSP-enforcing: No
Definition at line 26 of file PKIFCryptoPPExternalDigest.h.
Public Member Functions | |
| PKIFCryptoPPExternalDigest () | |
| ~PKIFCryptoPPExternalDigest () | |
| void | SetDigest (const unsigned char *buf, unsigned int length) |
| void | Update (const byte *input, size_t length) |
| unsigned int | DigestSize () const |
| void | TruncatedFinal (byte *digest, size_t digestSize) |
| bool | TruncatedVerify (const byte *digest, size_t digestLength) |
Constructor & Destructor Documentation
| PKIFCryptoPPExternalDigest::PKIFCryptoPPExternalDigest | ( | ) | [inline] |
Interface: Module
Default constructor
- Returns:
- N/A
Definition at line 37 of file PKIFCryptoPPExternalDigest.h.
| PKIFCryptoPPExternalDigest::~PKIFCryptoPPExternalDigest | ( | ) |
Interface: Module
Frees the digest set using SetDigest()
- Returns:
- N/A
Definition at line 21 of file PKIFCryptoPPExternalDigest.cpp.
Member Function Documentation
| void PKIFCryptoPPExternalDigest::SetDigest | ( | const unsigned char * | buf, | |
| unsigned int | length | |||
| ) |
Interface: Module
Set the digest (calculated externally) and length of the digest to be returned when a verifier calls Final() or used in the Verify() function
- Returns:
- N/A
Definition at line 37 of file PKIFCryptoPPExternalDigest.cpp.
Referenced by NewEDAccumulator().
| void PKIFCryptoPPExternalDigest::Update | ( | const byte * | input, | |
| size_t | length | |||
| ) | [inline] |
Interface: Module
Does nothing since this HashTransformation is only for messages that have already been hashed.
- Returns:
- N/A
Definition at line 51 of file PKIFCryptoPPExternalDigest.h.
| unsigned int PKIFCryptoPPExternalDigest::DigestSize | ( | void | ) | const |
Interface: Module Return the length of the digest. This will always be either what was set using SetDigest() or 0.
- Returns:
- Digest Length
Definition at line 55 of file PKIFCryptoPPExternalDigest.cpp.
| void PKIFCryptoPPExternalDigest::TruncatedFinal | ( | byte * | digest, | |
| size_t | digestSize | |||
| ) |
Interface: Module Copies the stored digest into digest
- Returns:
- Digest Length
- Parameters:
-
digest [out] The stored digest digestSize [in] The size of the buffer for the digest
Definition at line 64 of file PKIFCryptoPPExternalDigest.cpp.
| bool PKIFCryptoPPExternalDigest::TruncatedVerify | ( | const byte * | digest, | |
| size_t | digestLength | |||
| ) |
Interface: Module Compares the two digests
- Returns:
- true if the digests are identical, false otherwise Note: Current cryptopp signature verification interfaces do not seem to use this.
- Parameters:
-
digest [in] caller's digest digestLength [in] length in bytes of the caller's digest
Definition at line 84 of file PKIFCryptoPPExternalDigest.cpp.
The documentation for this class was generated from the following files:
