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ANSI X9.31 Hash Format z/OS Cryptographic Services ICSF Application Programmer's Guide SA22-7522-16 |
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With ANSI X9.31, the string that is processed by the RSA algorithm is formatted by the concatenation of a header, padding, the hash and a trailer, from the most significant bit to the least significant bit, such that the resulting string is the same length as the modulus of the key. For the ICSF implementation, the modulus length must be a multiple of 8 bits.
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