48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
/* Copyright (C) RSA Data Security, Inc. created 1993, 1996. This is an
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unpublished work protected as such under copyright law. This work
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contains proprietary, confidential, and trade secret information of
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RSA Data Security, Inc. Use, disclosure or reproduction without the
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express written authorization of RSA Data Security, Inc. is
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prohibited.
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*/
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#ifndef _BIGMAXES_H_
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#define _BIGMAXES_H_ 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_RSA_MODULUS_BITS 1024
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#define BITS_TO_LEN(modulusBits) (((modulusBits) + 7) / 8)
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#define RSA_PRIME_BITS(modulusBits) (((modulusBits) + 1) / 2)
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#define RSA_PRIME_LEN(modulusBits) ((RSA_PRIME_BITS (modulusBits) + 7) / 8)
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#define BITS_TO_WORDS(bits) ((bits >> 4) + 1)
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#define LEN_TO_WORDS(len) ((len >> 1) + 1)
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/* MAX_RSA_PRIME_BITS -- length in bits of the maximum allowed RSA prime
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MAX_RSA_MODULUS_LEN -- length in bytes of the maximum allowed RSA modulus,
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in canonical format (no sign bit)
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MAX_RSA_PRIME_LEN -- length in bytes of the maximum allowed RSA prime, in
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canonical format (no sign bit)
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*/
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#define MAX_RSA_PRIME_BITS RSA_PRIME_BITS (MAX_RSA_MODULUS_BITS)
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#define MAX_RSA_PRIME_LEN RSA_PRIME_LEN (MAX_RSA_MODULUS_BITS)
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#define MAX_RSA_MODULUS_LEN BITS_TO_LEN (MAX_RSA_MODULUS_BITS)
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/* MAX_RSA_MODULUS_WORDS -- length in 16-bit words of the maximum allowed RSA
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modulus, in bignum format (including sign bit)
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MAX_RSA_PRIME_WORDS -- length in 16-bit words of the maximum allowed RSA
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prime, in bignum format (including sign bit)
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*/
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#define MAX_RSA_MODULUS_WORDS BITS_TO_WORDS (MAX_RSA_MODULUS_BITS)
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#define MAX_RSA_PRIME_WORDS BITS_TO_WORDS (MAX_RSA_PRIME_BITS)
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#ifdef __cplusplus
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}
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#endif
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#endif
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