X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Frsa%2Frsa_x931g.c;h=1e164e86e14580eb89876d75dcca8205c345d604;hp=2c91268a8a6f9852f4c3d0e2398cfab05438af61;hb=9862e9aa98ee1e38fbcef8d1dd5db0e750eb5e8d;hpb=73e45b2dd127b10d6259203082fe2b49aa268986 diff --git a/crypto/rsa/rsa_x931g.c b/crypto/rsa/rsa_x931g.c index 2c91268a8a..1e164e86e1 100644 --- a/crypto/rsa/rsa_x931g.c +++ b/crypto/rsa/rsa_x931g.c @@ -1,25 +1,24 @@ -/* crypto/rsa/rsa_gen.c */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. - * + * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * + * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. - * + * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: @@ -34,10 +33,10 @@ * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from + * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * + * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE @@ -49,206 +48,196 @@ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. - * + * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ - - #include #include #include #include #include -#include +#include "rsa_locl.h" /* X9.31 RSA key derivation and generation */ -int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2, BIGNUM *q1, BIGNUM *q2, - const BIGNUM *Xp1, const BIGNUM *Xp2, const BIGNUM *Xp, - const BIGNUM *Xq1, const BIGNUM *Xq2, const BIGNUM *Xq, - const BIGNUM *e, BN_GENCB *cb) - { - BIGNUM *r0=NULL,*r1=NULL,*r2=NULL,*r3=NULL; - BN_CTX *ctx=NULL,*ctx2=NULL; - - if (!rsa) - goto err; - - ctx = BN_CTX_new(); - BN_CTX_start(ctx); - if (!ctx) - goto err; - - r0 = BN_CTX_get(ctx); - r1 = BN_CTX_get(ctx); - r2 = BN_CTX_get(ctx); - r3 = BN_CTX_get(ctx); - - if (r3 == NULL) - goto err; - if (!rsa->e) - { - rsa->e = BN_dup(e); - if (!rsa->e) - goto err; - } - else - e = rsa->e; - - /* If not all parameters present only calculate what we can. - * This allows test programs to output selective parameters. - */ - - if (Xp && !rsa->p) - { - rsa->p = BN_new(); - if (!rsa->p) - goto err; - - if (!BN_X931_derive_prime_ex(rsa->p, p1, p2, - Xp, Xp1, Xp2, e, ctx, cb)) - goto err; - } - - if (Xq && !rsa->q) - { - rsa->q = BN_new(); - if (!rsa->q) - goto err; - if (!BN_X931_derive_prime_ex(rsa->q, q1, q2, - Xq, Xq1, Xq2, e, ctx, cb)) - goto err; - } - - if (!rsa->p || !rsa->q) - { - BN_CTX_end(ctx); - BN_CTX_free(ctx); - return 2; - } - - /* Since both primes are set we can now calculate all remaining - * components. - */ - - /* calculate n */ - rsa->n=BN_new(); - if (rsa->n == NULL) - goto err; - if (!BN_mul(rsa->n,rsa->p,rsa->q,ctx)) - goto err; - - /* calculate d */ - if (!BN_sub(r1,rsa->p,BN_value_one())) - goto err; /* p-1 */ - if (!BN_sub(r2,rsa->q,BN_value_one())) - goto err; /* q-1 */ - if (!BN_mul(r0,r1,r2,ctx)) - goto err; /* (p-1)(q-1) */ - - if (!BN_gcd(r3, r1, r2, ctx)) - goto err; - - if (!BN_div(r0, NULL, r0, r3, ctx)) - goto err; /* LCM((p-1)(q-1)) */ - - ctx2 = BN_CTX_new(); - if (!ctx2) - goto err; - - rsa->d=BN_mod_inverse(NULL,rsa->e,r0,ctx2); /* d */ - if (rsa->d == NULL) - goto err; - - /* calculate d mod (p-1) */ - rsa->dmp1=BN_new(); - if (rsa->dmp1 == NULL) - goto err; - if (!BN_mod(rsa->dmp1,rsa->d,r1,ctx)) - goto err; - - /* calculate d mod (q-1) */ - rsa->dmq1=BN_new(); - if (rsa->dmq1 == NULL) - goto err; - if (!BN_mod(rsa->dmq1,rsa->d,r2,ctx)) - goto err; - - /* calculate inverse of q mod p */ - rsa->iqmp=BN_mod_inverse(NULL,rsa->q,rsa->p,ctx2); - - err: - if (ctx) - { - BN_CTX_end(ctx); - BN_CTX_free(ctx); - } - if (ctx2) - BN_CTX_free(ctx2); - /* If this is set all calls successful */ - if (rsa->iqmp != NULL) - return 1; - - return 0; - - } - -int RSA_X931_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e, BN_GENCB *cb) - { - int ok = 0; - BIGNUM *Xp = NULL, *Xq = NULL; - BN_CTX *ctx = NULL; - - ctx = BN_CTX_new(); - if (!ctx) - goto error; - - BN_CTX_start(ctx); - Xp = BN_CTX_get(ctx); - Xq = BN_CTX_get(ctx); - if (!BN_X931_generate_Xpq(Xp, Xq, bits, ctx)) - goto error; - - rsa->p = BN_new(); - rsa->q = BN_new(); - if (!rsa->p || !rsa->q) - goto error; - - /* Generate two primes from Xp, Xq */ - - if (!BN_X931_generate_prime_ex(rsa->p, NULL, NULL, NULL, NULL, Xp, - e, ctx, cb)) - goto error; - - if (!BN_X931_generate_prime_ex(rsa->q, NULL, NULL, NULL, NULL, Xq, - e, ctx, cb)) - goto error; - - /* Since rsa->p and rsa->q are valid this call will just derive - * remaining RSA components. - */ - - if (!RSA_X931_derive_ex(rsa, NULL, NULL, NULL, NULL, - NULL, NULL, NULL, NULL, NULL, NULL, e, cb)) - goto error; - - ok = 1; - - error: - if (ctx) - { - BN_CTX_end(ctx); - BN_CTX_free(ctx); - } - - if (ok) - return 1; - - return 0; - - } - +int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2, BIGNUM *q1, + BIGNUM *q2, const BIGNUM *Xp1, const BIGNUM *Xp2, + const BIGNUM *Xp, const BIGNUM *Xq1, const BIGNUM *Xq2, + const BIGNUM *Xq, const BIGNUM *e, BN_GENCB *cb) +{ + BIGNUM *r0 = NULL, *r1 = NULL, *r2 = NULL, *r3 = NULL; + BN_CTX *ctx = NULL, *ctx2 = NULL; + int ret = 0; + + if (!rsa) + goto err; + + ctx = BN_CTX_new(); + if (ctx == NULL) + goto err; + BN_CTX_start(ctx); + + r0 = BN_CTX_get(ctx); + r1 = BN_CTX_get(ctx); + r2 = BN_CTX_get(ctx); + r3 = BN_CTX_get(ctx); + + if (r3 == NULL) + goto err; + if (!rsa->e) { + rsa->e = BN_dup(e); + if (!rsa->e) + goto err; + } else + e = rsa->e; + + /* + * If not all parameters present only calculate what we can. This allows + * test programs to output selective parameters. + */ + + if (Xp && rsa->p == NULL) { + rsa->p = BN_new(); + if (rsa->p == NULL) + goto err; + + if (!BN_X931_derive_prime_ex(rsa->p, p1, p2, + Xp, Xp1, Xp2, e, ctx, cb)) + goto err; + } + + if (Xq && rsa->q == NULL) { + rsa->q = BN_new(); + if (rsa->q == NULL) + goto err; + if (!BN_X931_derive_prime_ex(rsa->q, q1, q2, + Xq, Xq1, Xq2, e, ctx, cb)) + goto err; + } + + if (rsa->p == NULL || rsa->q == NULL) { + BN_CTX_end(ctx); + BN_CTX_free(ctx); + return 2; + } + + /* + * Since both primes are set we can now calculate all remaining + * components. + */ + + /* calculate n */ + rsa->n = BN_new(); + if (rsa->n == NULL) + goto err; + if (!BN_mul(rsa->n, rsa->p, rsa->q, ctx)) + goto err; + + /* calculate d */ + if (!BN_sub(r1, rsa->p, BN_value_one())) + goto err; /* p-1 */ + if (!BN_sub(r2, rsa->q, BN_value_one())) + goto err; /* q-1 */ + if (!BN_mul(r0, r1, r2, ctx)) + goto err; /* (p-1)(q-1) */ + + if (!BN_gcd(r3, r1, r2, ctx)) + goto err; + + if (!BN_div(r0, NULL, r0, r3, ctx)) + goto err; /* LCM((p-1)(q-1)) */ + + ctx2 = BN_CTX_new(); + if (ctx2 == NULL) + goto err; + + rsa->d = BN_mod_inverse(NULL, rsa->e, r0, ctx2); /* d */ + if (rsa->d == NULL) + goto err; + + /* calculate d mod (p-1) */ + rsa->dmp1 = BN_new(); + if (rsa->dmp1 == NULL) + goto err; + if (!BN_mod(rsa->dmp1, rsa->d, r1, ctx)) + goto err; + + /* calculate d mod (q-1) */ + rsa->dmq1 = BN_new(); + if (rsa->dmq1 == NULL) + goto err; + if (!BN_mod(rsa->dmq1, rsa->d, r2, ctx)) + goto err; + + /* calculate inverse of q mod p */ + rsa->iqmp = BN_mod_inverse(NULL, rsa->q, rsa->p, ctx2); + + ret = 1; + err: + if (ctx) + BN_CTX_end(ctx); + BN_CTX_free(ctx); + BN_CTX_free(ctx2); + + return ret; + +} + +int RSA_X931_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e, + BN_GENCB *cb) +{ + int ok = 0; + BIGNUM *Xp = NULL, *Xq = NULL; + BN_CTX *ctx = NULL; + + ctx = BN_CTX_new(); + if (ctx == NULL) + goto error; + + BN_CTX_start(ctx); + Xp = BN_CTX_get(ctx); + Xq = BN_CTX_get(ctx); + if (!BN_X931_generate_Xpq(Xp, Xq, bits, ctx)) + goto error; + + rsa->p = BN_new(); + rsa->q = BN_new(); + if (rsa->p == NULL || rsa->q == NULL) + goto error; + + /* Generate two primes from Xp, Xq */ + + if (!BN_X931_generate_prime_ex(rsa->p, NULL, NULL, NULL, NULL, Xp, + e, ctx, cb)) + goto error; + + if (!BN_X931_generate_prime_ex(rsa->q, NULL, NULL, NULL, NULL, Xq, + e, ctx, cb)) + goto error; + + /* + * Since rsa->p and rsa->q are valid this call will just derive remaining + * RSA components. + */ + + if (!RSA_X931_derive_ex(rsa, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, e, cb)) + goto error; + + ok = 1; + + error: + if (ctx) + BN_CTX_end(ctx); + BN_CTX_free(ctx); + + if (ok) + return 1; + + return 0; + +}