RSA Security 5 manual Int BDecodeInit

B_DecodeInit

B_DecodeInit

B_DecodeInit

B_DecodeInit

int B_DecodeInit (
B_ALGORITHM_OBJ algorithmObject	/* algorithm object */
);

Description

B_DecodeInit allocates and initializes algorithmObject for decoding (not decrypting) data using the algorithm specified by a previous call to B_SetAlgorithmInfo. For example, the AI_RFC1113Recode algorithm provides Base64 encoding and decoding to convert binary data to and from a printable form suitable for most email systems. Notice that there are no cryptographic keys for encoding or decoding.

only needs to be called once to set up a decode algorithm. The B_DecodeUpdate routine can be called multiple times to process blocks of data, and B_DecodeFinal is called once to process the last block which includes removing any trailing pad bytes. After B_DecodeFinal is called, B_DecodeUpdate can be called to start decoding another sequence of blocks. There is no need to call

again.

Return value

Value	Description
0	Operation was successful.
non-zero	see Appendix A, “Crypto-C Error Types”

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