79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
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/* Copyright (c) 2005-2007 Apple Inc. All Rights Reserved. */
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/*
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* rsaGiantKey.h - internal format of RSA keys, constructors for them.
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*/
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#ifndef _LIBGRSA_RSA_GIANT_KEY_H_
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#define _LIBGRSA_RSA_GIANT_KEY_H_
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#include <libgRSA/libgRSA_config.h>
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#include <libGiants/giantIntegers.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* A custom "small" giant used to represent some individual fields in a
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* RSAFullGiantKey. These fields are typically half the size of the
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* modulus. We use MAX_PRIME_SIZE/2 + 1 digits for these.
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*/
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#define RSA_SMALL_GIANT_DIGITS ((MAX_PRIME_SIZE_DIGITS + 3) / 2)
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typedef struct {
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giantStruct g;
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giantDigit _n_[RSA_SMALL_GIANT_DIGITS];
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} rsaSmallGiantStruct;
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typedef rsaSmallGiantStruct rsaSgiant; /* for heap allocation */
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/* call this after declaring a local lgiant and before using it */
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extern void localSmallGiantAlloc(rsaSgiant *g);
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/* RSA public key form native to this library */
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typedef struct {
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lgiant e; /* public exponent */
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lgiant n; /* modulus */
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lgiant recip; /* reciprocal of n */
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} RSAPubGiantKey;
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/* RSA private key form native to this library */
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typedef struct {
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rsaSgiant p;
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rsaSgiant q;
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rsaSgiant dp;
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rsaSgiant dq;
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rsaSgiant qInv;
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/* reciprocals of p and q */
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rsaSgiant pRecip;
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rsaSgiant qRecip;
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} RSAPrivGiantKey;
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/*
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* A full RSA key pair.
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*/
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typedef struct {
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RSAPubGiantKey pub;
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lgiant d; /* private exponent */
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RSAPrivGiantKey priv;
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} RSAFullGiantKey;
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/* clear an RSA*GiantKey */
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void rsaClearPubGKey(
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RSAPubGiantKey *gKey);
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void rsaClearPrivGKey(
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RSAPrivGiantKey *gKey);
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void rsaClearFullGiantKey(
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RSAFullGiantKey *gKey);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _LIBGRSA_RSA_GIANT_KEY_H_ */
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