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AI_MD5WithXOR_BER
138 RSA BSAFE Crypto-C Library Reference Manual
AI_MD5WithXOR_BER
Purpose:
This AI is similar to AI_MD5WithXOR except that it uses the ASN.1 BER format. This AI
allows you to parse and create ASN.1 algorithm identifiers such as 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_MD5WithXOR. You call
B_GetAlgorithmInfo with this AI to create an encoded algorithm identifier from an
algorithm object that was created using
AI_MD5WithXOR or AI_MD5WithXOR_BER. The
OID for this algorithm, excluding the tag and length bytes, in decimal is “42, 134,
72, 134, 247, 13, 1, 5, 9
”.
Type of information this allows you to use:
the encoding of an algorithm identifier that specifies the MD5 With “exclusive or”
(XOR) password-based encryption algorithm, as defined by RSA Security Inc.
Format of info supplied to B_SetAlgorithmInfo:
pointer to an ITEM structure that gives the address and length of the BER-encoded
algorithm identifier. The encoding is converted to DER before it is copied to the
algorithm object.
B_SetAlgorithmInfo returns BE_WRONG_ALGORITHM_INFO if the
algorithm identifier specifies an algorithm other than MD5 With XOR.
Format of info returned by B_GetAlgorithmInfo:
pointer to an ITEM structure that gives the address and length of the DER-encoded
algorithm identifier.
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.
Algorithm methods to include in application’s algorithm chooser:
AM_MD5 and AM_MD5_RANDOM.