diff options
Diffstat (limited to 'crypto/rsa/rsa_locl.h')
| -rw-r--r-- | crypto/rsa/rsa_locl.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/crypto/rsa/rsa_locl.h b/crypto/rsa/rsa_locl.h index 3e88187d9b06..2b94462a94c6 100644 --- a/crypto/rsa/rsa_locl.h +++ b/crypto/rsa/rsa_locl.h @@ -1,4 +1,132 @@ +/* + * Copyright 2006-2017 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#include <openssl/rsa.h> +#include "internal/refcount.h" + +#define RSA_MAX_PRIME_NUM 5 +#define RSA_MIN_MODULUS_BITS 512 + +typedef struct rsa_prime_info_st { + BIGNUM *r; + BIGNUM *d; + BIGNUM *t; + /* save product of primes prior to this one */ + BIGNUM *pp; + BN_MONT_CTX *m; +} RSA_PRIME_INFO; + +DECLARE_ASN1_ITEM(RSA_PRIME_INFO) +DEFINE_STACK_OF(RSA_PRIME_INFO) + +struct rsa_st { + /* + * The first parameter is used to pickup errors where this is passed + * instead of an EVP_PKEY, it is set to 0 + */ + int pad; + int32_t version; + const RSA_METHOD *meth; + /* functional reference if 'meth' is ENGINE-provided */ + ENGINE *engine; + BIGNUM *n; + BIGNUM *e; + BIGNUM *d; + BIGNUM *p; + BIGNUM *q; + BIGNUM *dmp1; + BIGNUM *dmq1; + BIGNUM *iqmp; + /* for multi-prime RSA, defined in RFC 8017 */ + STACK_OF(RSA_PRIME_INFO) *prime_infos; + /* If a PSS only key this contains the parameter restrictions */ + RSA_PSS_PARAMS *pss; + /* be careful using this if the RSA structure is shared */ + CRYPTO_EX_DATA ex_data; + CRYPTO_REF_COUNT references; + int flags; + /* Used to cache montgomery values */ + BN_MONT_CTX *_method_mod_n; + BN_MONT_CTX *_method_mod_p; + BN_MONT_CTX *_method_mod_q; + /* + * all BIGNUM values are actually in the following data, if it is not + * NULL + */ + char *bignum_data; + BN_BLINDING *blinding; + BN_BLINDING *mt_blinding; + CRYPTO_RWLOCK *lock; +}; + +struct rsa_meth_st { + char *name; + int (*rsa_pub_enc) (int flen, const unsigned char *from, + unsigned char *to, RSA *rsa, int padding); + int (*rsa_pub_dec) (int flen, const unsigned char *from, + unsigned char *to, RSA *rsa, int padding); + int (*rsa_priv_enc) (int flen, const unsigned char *from, + unsigned char *to, RSA *rsa, int padding); + int (*rsa_priv_dec) (int flen, const unsigned char *from, + unsigned char *to, RSA *rsa, int padding); + /* Can be null */ + int (*rsa_mod_exp) (BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx); + /* Can be null */ + int (*bn_mod_exp) (BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); + /* called at new */ + int (*init) (RSA *rsa); + /* called at free */ + int (*finish) (RSA *rsa); + /* RSA_METHOD_FLAG_* things */ + int flags; + /* may be needed! */ + char *app_data; + /* + * New sign and verify functions: some libraries don't allow arbitrary + * data to be signed/verified: this allows them to be used. Note: for + * this to work the RSA_public_decrypt() and RSA_private_encrypt() should + * *NOT* be used RSA_sign(), RSA_verify() should be used instead. + */ + int (*rsa_sign) (int type, + const unsigned char *m, unsigned int m_length, + unsigned char *sigret, unsigned int *siglen, + const RSA *rsa); + int (*rsa_verify) (int dtype, const unsigned char *m, + unsigned int m_length, const unsigned char *sigbuf, + unsigned int siglen, const RSA *rsa); + /* + * If this callback is NULL, the builtin software RSA key-gen will be + * used. This is for behavioural compatibility whilst the code gets + * rewired, but one day it would be nice to assume there are no such + * things as "builtin software" implementations. + */ + int (*rsa_keygen) (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb); + int (*rsa_multi_prime_keygen) (RSA *rsa, int bits, int primes, + BIGNUM *e, BN_GENCB *cb); +}; + extern int int_rsa_verify(int dtype, const unsigned char *m, unsigned int m_len, unsigned char *rm, size_t *prm_len, const unsigned char *sigbuf, size_t siglen, RSA *rsa); +/* Macros to test if a pkey or ctx is for a PSS key */ +#define pkey_is_pss(pkey) (pkey->ameth->pkey_id == EVP_PKEY_RSA_PSS) +#define pkey_ctx_is_pss(ctx) (ctx->pmeth->pkey_id == EVP_PKEY_RSA_PSS) + +RSA_PSS_PARAMS *rsa_pss_params_create(const EVP_MD *sigmd, + const EVP_MD *mgf1md, int saltlen); +int rsa_pss_get_param(const RSA_PSS_PARAMS *pss, const EVP_MD **pmd, + const EVP_MD **pmgf1md, int *psaltlen); +/* internal function to clear and free multi-prime parameters */ +void rsa_multip_info_free_ex(RSA_PRIME_INFO *pinfo); +void rsa_multip_info_free(RSA_PRIME_INFO *pinfo); +RSA_PRIME_INFO *rsa_multip_info_new(void); +int rsa_multip_calc_product(RSA *rsa); +int rsa_multip_cap(int bits); |