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AI_EC_ES
70 RSA BSAFE Crypto-C Library Reference Manual
AI_EC_ES
Purpose:
This AI allows you to perform public-key encryption or private-key decryption using
the Elliptic-Curve Authenticated Encryption System, where ciphertext includes the
SHA1 digest as well as encrypted plaintext.
Type of information this allows you to use:
the elliptic curve authenticated encryption scheme as defined in X9.63 Draft, as of
10/97.
Format of info supplied to B_SetAlgorithmInfo:
NULL_PTR.
Format of info returned by B_GetAlgorithmInfo:
NULL_PTR.
Crypto-C procedures to use with algorithm object:
B_EncryptInit, B_EncryptUpdate, B_EncryptFinal, B_DecryptInit,
B_DecryptUpdate, and B_DecryptFinal. You must pass an initialized random
algorithm in
B_EncryptFinal, but may pass (B_ALGORITHM_OBJ)NULL_PTR for all other
randomAlgorithm
arguments.
Algorithm methods to include in application's algorithm chooser:
AM_ECFP_ENCRYPT for encryption and AM_ECFP_DECRYPT for decryption with odd prime
fields,
AM_ECF2POLY_ENCRYPT for encryption and AM_ECF2POLY_DECRYPT for decryption
with even characteristic.
Output Considerations:
The encrypted data can be as much as ((21 + 2 · (the size of a field element in bytes) +
(length of input in bytes)) bytes long.