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/* crypto/dh/dh.h */ /* 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: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * 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 * 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 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * 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.] */ #ifndef HEADER_DH_H # define HEADER_DH_H # include <openssl/e_os2.h> # ifdef OPENSSL_NO_DH # error DH is disabled. # endif # ifndef OPENSSL_NO_BIO # include <openssl/bio.h> # endif # include <openssl/ossl_typ.h> # ifndef OPENSSL_NO_DEPRECATED # include <openssl/bn.h> # endif # ifndef OPENSSL_DH_MAX_MODULUS_BITS # define OPENSSL_DH_MAX_MODULUS_BITS 10000 # endif # define OPENSSL_DH_FIPS_MIN_MODULUS_BITS 1024 # define OPENSSL_DH_FIPS_MIN_MODULUS_BITS_GEN 2048 # define DH_FLAG_CACHE_MONT_P 0x01 /* * new with 0.9.7h; the built-in DH * implementation now uses constant time * modular exponentiation for secret exponents * by default. This flag causes the * faster variable sliding window method to * be used for all exponents. */ # define DH_FLAG_NO_EXP_CONSTTIME 0x02 /* * If this flag is set the DH method is FIPS compliant and can be used in * FIPS mode. This is set in the validated module method. If an application * sets this flag in its own methods it is its reposibility to ensure the * result is compliant. */ # define DH_FLAG_FIPS_METHOD 0x0400 /* * If this flag is set the operations normally disabled in FIPS mode are * permitted it is then the applications responsibility to ensure that the * usage is compliant. */ # define DH_FLAG_NON_FIPS_ALLOW 0x0400 #ifdef __cplusplus extern "C" { #endif /* Already defined in ossl_typ.h */ /* typedef struct dh_st DH; */ /* typedef struct dh_method DH_METHOD; */ struct dh_method { const char *name; /* Methods here */ int (*generate_key) (DH *dh); int (*compute_key) (unsigned char *key, const BIGNUM *pub_key, DH *dh); /* Can be null */ int (*bn_mod_exp) (const DH *dh, BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); int (*init) (DH *dh); int (*finish) (DH *dh); int flags; char *app_data; /* If this is non-NULL, it will be used to generate parameters */ int (*generate_params) (DH *dh, int prime_len, int generator, BN_GENCB *cb); }; struct dh_st { /* * This first argument is used to pick up errors when a DH is passed * instead of a EVP_PKEY */ int pad; int version; BIGNUM *p; BIGNUM *g; long length; /* optional */ BIGNUM *pub_key; /* g^x % p */ BIGNUM *priv_key; /* x */ int flags; BN_MONT_CTX *method_mont_p; /* Place holders if we want to do X9.42 DH */ BIGNUM *q; BIGNUM *j; unsigned char *seed; int seedlen; BIGNUM *counter; int references; CRYPTO_EX_DATA ex_data; const DH_METHOD *meth; ENGINE *engine; }; # define DH_GENERATOR_2 2 /* #define DH_GENERATOR_3 3 */ # define DH_GENERATOR_5 5 /* DH_check error codes */ # define DH_CHECK_P_NOT_PRIME 0x01 # define DH_CHECK_P_NOT_SAFE_PRIME 0x02 # define DH_UNABLE_TO_CHECK_GENERATOR 0x04 # define DH_NOT_SUITABLE_GENERATOR 0x08 # define DH_CHECK_Q_NOT_PRIME 0x10 # define DH_CHECK_INVALID_Q_VALUE 0x20 # define DH_CHECK_INVALID_J_VALUE 0x40 /* DH_check_pub_key error codes */ # define DH_CHECK_PUBKEY_TOO_SMALL 0x01 # define DH_CHECK_PUBKEY_TOO_LARGE 0x02 # define DH_CHECK_PUBKEY_INVALID 0x04 /* * primes p where (p-1)/2 is prime too are called "safe"; we define this for * backward compatibility: */ # define DH_CHECK_P_NOT_STRONG_PRIME DH_CHECK_P_NOT_SAFE_PRIME # define d2i_DHparams_fp(fp,x) \ (DH *)ASN1_d2i_fp((char *(*)())DH_new, \ (char *(*)())d2i_DHparams, \ (fp), \ (unsigned char **)(x)) # define i2d_DHparams_fp(fp,x) \ ASN1_i2d_fp(i2d_DHparams,(fp), (unsigned char *)(x)) # define d2i_DHparams_bio(bp,x) \ ASN1_d2i_bio_of(DH, DH_new, d2i_DHparams, bp, x) # define i2d_DHparams_bio(bp,x) \ ASN1_i2d_bio_of_const(DH,i2d_DHparams,bp,x) # define d2i_DHxparams_fp(fp,x) \ (DH *)ASN1_d2i_fp((char *(*)())DH_new, \ (char *(*)())d2i_DHxparams, \ (fp), \ (unsigned char **)(x)) # define i2d_DHxparams_fp(fp,x) \ ASN1_i2d_fp(i2d_DHxparams,(fp), (unsigned char *)(x)) # define d2i_DHxparams_bio(bp,x) \ ASN1_d2i_bio_of(DH, DH_new, d2i_DHxparams, bp, x) # define i2d_DHxparams_bio(bp,x) \ ASN1_i2d_bio_of_const(DH, i2d_DHxparams, bp, x) DH *DHparams_dup(DH *); const DH_METHOD *DH_OpenSSL(void); void DH_set_default_method(const DH_METHOD *meth); const DH_METHOD *DH_get_default_method(void); int DH_set_method(DH *dh, const DH_METHOD *meth); DH *DH_new_method(ENGINE *engine); DH *DH_new(void); void DH_free(DH *dh); int DH_up_ref(DH *dh); int DH_size(const DH *dh); int DH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func); int DH_set_ex_data(DH *d, int idx, void *arg); void *DH_get_ex_data(DH *d, int idx); /* Deprecated version */ # ifndef OPENSSL_NO_DEPRECATED DH *DH_generate_parameters(int prime_len, int generator, void (*callback) (int, int, void *), void *cb_arg); # endif /* !defined(OPENSSL_NO_DEPRECATED) */ /* New version */ int DH_generate_parameters_ex(DH *dh, int prime_len, int generator, BN_GENCB *cb); int DH_check(const DH *dh, int *codes); int DH_check_pub_key(const DH *dh, const BIGNUM *pub_key, int *codes); int DH_generate_key(DH *dh); int DH_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh); int DH_compute_key_padded(unsigned char *key, const BIGNUM *pub_key, DH *dh); DH *d2i_DHparams(DH **a, const unsigned char **pp, long length); int i2d_DHparams(const DH *a, unsigned char **pp); DH *d2i_DHxparams(DH **a, const unsigned char **pp, long length); int i2d_DHxparams(const DH *a, unsigned char **pp); # ifndef OPENSSL_NO_FP_API int DHparams_print_fp(FILE *fp, const DH *x); # endif # ifndef OPENSSL_NO_BIO int DHparams_print(BIO *bp, const DH *x); # else int DHparams_print(char *bp, const DH *x); # endif /* RFC 5114 parameters */ DH *DH_get_1024_160(void); DH *DH_get_2048_224(void); DH *DH_get_2048_256(void); # ifndef OPENSSL_NO_CMS /* RFC2631 KDF */ int DH_KDF_X9_42(unsigned char *out, size_t outlen, const unsigned char *Z, size_t Zlen, ASN1_OBJECT *key_oid, const unsigned char *ukm, size_t ukmlen, const EVP_MD *md); # endif # define EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, len) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \ EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN, len, NULL) # define EVP_PKEY_CTX_set_dh_paramgen_subprime_len(ctx, len) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \ EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN, len, NULL) # define EVP_PKEY_CTX_set_dh_paramgen_type(ctx, typ) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \ EVP_PKEY_CTRL_DH_PARAMGEN_TYPE, typ, NULL) # define EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, gen) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_PARAMGEN, \ EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR, gen, NULL) # define EVP_PKEY_CTX_set_dh_rfc5114(ctx, gen) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_PARAMGEN, \ EVP_PKEY_CTRL_DH_RFC5114, gen, NULL) # define EVP_PKEY_CTX_set_dhx_rfc5114(ctx, gen) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_PARAMGEN, \ EVP_PKEY_CTRL_DH_RFC5114, gen, NULL) # define EVP_PKEY_CTX_set_dh_kdf_type(ctx, kdf) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \ EVP_PKEY_OP_DERIVE, \ EVP_PKEY_CTRL_DH_KDF_TYPE, kdf, NULL) # define EVP_PKEY_CTX_get_dh_kdf_type(ctx) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \ EVP_PKEY_OP_DERIVE, \ EVP_PKEY_CTRL_DH_KDF_TYPE, -2, NULL) # define EVP_PKEY_CTX_set0_dh_kdf_oid(ctx, oid) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \ EVP_PKEY_OP_DERIVE, \ EVP_PKEY_CTRL_DH_KDF_OID, 0, (void *)oid) # define EVP_PKEY_CTX_get0_dh_kdf_oid(ctx, poid) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \ EVP_PKEY_OP_DERIVE, \ EVP_PKEY_CTRL_GET_DH_KDF_OID, 0, (void *)poid) # define EVP_PKEY_CTX_set_dh_kdf_md(ctx, md) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \ EVP_PKEY_OP_DERIVE, \ EVP_PKEY_CTRL_DH_KDF_MD, 0, (void *)md) # define EVP_PKEY_CTX_get_dh_kdf_md(ctx, pmd) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \ EVP_PKEY_OP_DERIVE, \ EVP_PKEY_CTRL_GET_DH_KDF_MD, 0, (void *)pmd) # define EVP_PKEY_CTX_set_dh_kdf_outlen(ctx, len) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \ EVP_PKEY_OP_DERIVE, \ EVP_PKEY_CTRL_DH_KDF_OUTLEN, len, NULL) # define EVP_PKEY_CTX_get_dh_kdf_outlen(ctx, plen) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \ EVP_PKEY_OP_DERIVE, \ EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN, 0, (void *)plen) # define EVP_PKEY_CTX_set0_dh_kdf_ukm(ctx, p, plen) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \ EVP_PKEY_OP_DERIVE, \ EVP_PKEY_CTRL_DH_KDF_UKM, plen, (void *)p) # define EVP_PKEY_CTX_get0_dh_kdf_ukm(ctx, p) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \ EVP_PKEY_OP_DERIVE, \ EVP_PKEY_CTRL_GET_DH_KDF_UKM, 0, (void *)p) # define EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN (EVP_PKEY_ALG_CTRL + 1) # define EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR (EVP_PKEY_ALG_CTRL + 2) # define EVP_PKEY_CTRL_DH_RFC5114 (EVP_PKEY_ALG_CTRL + 3) # define EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN (EVP_PKEY_ALG_CTRL + 4) # define EVP_PKEY_CTRL_DH_PARAMGEN_TYPE (EVP_PKEY_ALG_CTRL + 5) # define EVP_PKEY_CTRL_DH_KDF_TYPE (EVP_PKEY_ALG_CTRL + 6) # define EVP_PKEY_CTRL_DH_KDF_MD (EVP_PKEY_ALG_CTRL + 7) # define EVP_PKEY_CTRL_GET_DH_KDF_MD (EVP_PKEY_ALG_CTRL + 8) # define EVP_PKEY_CTRL_DH_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 9) # define EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 10) # define EVP_PKEY_CTRL_DH_KDF_UKM (EVP_PKEY_ALG_CTRL + 11) # define EVP_PKEY_CTRL_GET_DH_KDF_UKM (EVP_PKEY_ALG_CTRL + 12) # define EVP_PKEY_CTRL_DH_KDF_OID (EVP_PKEY_ALG_CTRL + 13) # define EVP_PKEY_CTRL_GET_DH_KDF_OID (EVP_PKEY_ALG_CTRL + 14) /* KDF types */ # define EVP_PKEY_DH_KDF_NONE 1 # define EVP_PKEY_DH_KDF_X9_42 2 /* BEGIN ERROR CODES */ /* * The following lines are auto generated by the script mkerr.pl. Any changes * made after this point may be overwritten when the script is next run. */ void ERR_load_DH_strings(void); /* Error codes for the DH functions. */ /* Function codes. */ # define DH_F_COMPUTE_KEY 102 # define DH_F_DHPARAMS_PRINT_FP 101 # define DH_F_DH_BUILTIN_GENPARAMS 106 # define DH_F_DH_CMS_DECRYPT 117 # define DH_F_DH_CMS_SET_PEERKEY 118 # define DH_F_DH_CMS_SET_SHARED_INFO 119 # define DH_F_DH_COMPUTE_KEY 114 # define DH_F_DH_GENERATE_KEY 115 # define DH_F_DH_GENERATE_PARAMETERS_EX 116 # define DH_F_DH_NEW_METHOD 105 # define DH_F_DH_PARAM_DECODE 107 # define DH_F_DH_PRIV_DECODE 110 # define DH_F_DH_PRIV_ENCODE 111 # define DH_F_DH_PUB_DECODE 108 # define DH_F_DH_PUB_ENCODE 109 # define DH_F_DO_DH_PRINT 100 # define DH_F_GENERATE_KEY 103 # define DH_F_GENERATE_PARAMETERS 104 # define DH_F_PKEY_DH_DERIVE 112 # define DH_F_PKEY_DH_KEYGEN 113 /* Reason codes. */ # define DH_R_BAD_GENERATOR 101 # define DH_R_BN_DECODE_ERROR 109 # define DH_R_BN_ERROR 106 # define DH_R_DECODE_ERROR 104 # define DH_R_INVALID_PUBKEY 102 # define DH_R_KDF_PARAMETER_ERROR 112 # define DH_R_KEYS_NOT_SET 108 # define DH_R_KEY_SIZE_TOO_SMALL 110 # define DH_R_MODULUS_TOO_LARGE 103 # define DH_R_NON_FIPS_METHOD 111 # define DH_R_NO_PARAMETERS_SET 107 # define DH_R_NO_PRIVATE_VALUE 100 # define DH_R_PARAMETER_ENCODING_ERROR 105 # define DH_R_PEER_KEY_ERROR 113 # define DH_R_SHARED_INFO_ERROR 114 #ifdef __cplusplus } #endif #endif