AI_MD5WithDES_CBCPadBER
AI_MD5WithDES_CBCPadBER
Purpose:
This AI is similar to AI_MD5WithDES_CBCPad except that it uses the ASN.1 BER format. This AI allows you to parse and create ASN.1 algorithm identifiers such as those used in PKCS #7 and other protocols. You call B_SetAlgorithmInfo to initialize an algorithm object from the encoded algorithm identifier which includes ASN.1 encoding of the B_PBE_PARAMS structure defined in the description of AI_MD5WithDES_CBCPad. You call B_GetAlgorithmInfo with this AI to create an encoded algorithm identifier from an algorithm object that was created using AI_MD5WithDES_CBCPad or AI_MD5WithDES_CBCPad. The OID for this algorithm, excluding the tag and length bytes, in decimal is “42, 134, 72, 134, 247, 13, 1, 5, 3”.
Type of information this allows you to use:
the encoding of an algorithm identifier that specifies the MD5 With
Format of info supplied to B_SetAlgorithmInfo:
pointer to an ITEM structure that gives the address and length of the
Format of info returned by B_GetAlgorithmInfo:
pointer to an ITEM structure that gives the address and length of the
Crypto-C procedures to use with algorithm object:
B_EncryptInit, B_EncryptUpdate, B_EncryptFinal, B_DecryptInit,
B_DecryptUpdate, and B_DecryptFinal. You may pass (B_ALGORITHM_OBJ)NULL_PTR for all randomAlgorithm arguments.
C h a p t e r 2 A l g o r i t h m I n f o Ty p e s | 125 |
