#ifndef __LIBSSH2_OPENSSL_H #define __LIBSSH2_OPENSSL_H /* Copyright (C) 2009, 2010 Simon Josefsson * Copyright (C) 2006, 2007 The Written Word, Inc. All rights reserved. * * Author: Simon Josefsson * * Redistribution and use in source and binary forms, * with or without modification, are permitted provided * that the following conditions are met: * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * 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. * * Neither the name of the copyright holder nor the names * of any other contributors may be used to endorse or * promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND * CONTRIBUTORS "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 COPYRIGHT OWNER 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. */ #define LIBSSH2_CRYPTO_ENGINE libssh2_openssl /* disable deprecated warnings in OpenSSL 3 */ #define OPENSSL_SUPPRESS_DEPRECATED #ifdef LIBSSH2_WOLFSSL #include #include #if defined(NO_DSA) || defined(HAVE_FIPS) #define OPENSSL_NO_DSA #endif #if defined(NO_MD5) || defined(HAVE_FIPS) #define OPENSSL_NO_MD5 #endif #if !defined(WOLFSSL_RIPEMD) || defined(HAVE_FIPS) #define OPENSSL_NO_RIPEMD #endif #if defined(NO_RC4) || defined(HAVE_FIPS) #define OPENSSL_NO_RC4 #endif #ifdef NO_DES3 #define OPENSSL_NO_DES #endif /* wolfSSL doesn't support Blowfish or CAST. */ #define OPENSSL_NO_BF #define OPENSSL_NO_CAST /* wolfSSL has no engine framework. */ #define OPENSSL_NO_ENGINE #endif /* LIBSSH2_WOLFSSL */ #include #include #include #ifndef OPENSSL_NO_ENGINE #include #endif #ifndef OPENSSL_NO_DSA #include #endif #ifndef OPENSSL_NO_MD5 #include #endif #include #include #include #include #include #include #if (OPENSSL_VERSION_NUMBER >= 0x10100000L && \ !defined(LIBRESSL_VERSION_NUMBER)) || defined(LIBSSH2_WOLFSSL) || \ LIBRESSL_VERSION_NUMBER >= 0x3050000fL /* For wolfSSL, whether the structs are truly opaque or not, it's best to not * rely on their internal data members being exposed publicly. */ # define HAVE_OPAQUE_STRUCTS 1 #endif #ifdef OPENSSL_NO_RSA # define LIBSSH2_RSA 0 # define LIBSSH2_RSA_SHA1 0 # define LIBSSH2_RSA_SHA2 0 #else # define LIBSSH2_RSA 1 # define LIBSSH2_RSA_SHA1 1 # define LIBSSH2_RSA_SHA2 1 #endif #ifdef OPENSSL_NO_DSA # define LIBSSH2_DSA 0 #else # define LIBSSH2_DSA 1 #endif #if defined(OPENSSL_NO_ECDSA) || defined(OPENSSL_NO_EC) # define LIBSSH2_ECDSA 0 #else # define LIBSSH2_ECDSA 1 #endif #if (OPENSSL_VERSION_NUMBER >= 0x10101000L && \ !defined(LIBRESSL_VERSION_NUMBER)) || \ (defined(LIBRESSL_VERSION_NUMBER) && \ LIBRESSL_VERSION_NUMBER >= 0x3070000fL) # define LIBSSH2_ED25519 1 #else # define LIBSSH2_ED25519 0 #endif #ifdef OPENSSL_NO_MD5 # define LIBSSH2_MD5 0 #else # define LIBSSH2_MD5 1 #endif #if defined(OPENSSL_NO_RIPEMD) || defined(OPENSSL_NO_RMD160) # define LIBSSH2_HMAC_RIPEMD 0 #else # define LIBSSH2_HMAC_RIPEMD 1 #endif #define LIBSSH2_HMAC_SHA256 1 #define LIBSSH2_HMAC_SHA512 1 #if (OPENSSL_VERSION_NUMBER >= 0x00907000L && !defined(OPENSSL_NO_AES)) || \ (defined(LIBSSH2_WOLFSSL) && defined(WOLFSSL_AES_COUNTER)) # define LIBSSH2_AES_CTR 1 # define LIBSSH2_AES_CBC 1 #else # define LIBSSH2_AES_CTR 0 # define LIBSSH2_AES_CBC 0 #endif #if (OPENSSL_VERSION_NUMBER >= 0x01010100fL && !defined(OPENSSL_NO_AES)) || \ (defined(LIBSSH2_WOLFSSL) && \ defined(HAVE_AESGCM) && defined(WOLFSSL_AESGCM_STREAM)) # define LIBSSH2_AES_GCM 1 #else # define LIBSSH2_AES_GCM 0 #endif #ifdef OPENSSL_NO_BF # define LIBSSH2_BLOWFISH 0 #else # define LIBSSH2_BLOWFISH 1 #endif #ifdef OPENSSL_NO_RC4 # define LIBSSH2_RC4 0 #else # define LIBSSH2_RC4 1 #endif #ifdef OPENSSL_NO_CAST # define LIBSSH2_CAST 0 #else # define LIBSSH2_CAST 1 #endif #ifdef OPENSSL_NO_DES # define LIBSSH2_3DES 0 #else # define LIBSSH2_3DES 1 #endif #define EC_MAX_POINT_LEN ((528 * 2 / 8) + 1) #define _libssh2_random(buf, len) \ _libssh2_openssl_random((buf), (len)) #define libssh2_prepare_iovec(vec, len) /* Empty. */ #ifdef HAVE_OPAQUE_STRUCTS #define libssh2_sha1_ctx EVP_MD_CTX * #else #define libssh2_sha1_ctx EVP_MD_CTX #endif /* returns 0 in case of failure */ int _libssh2_sha1_init(libssh2_sha1_ctx *ctx); #define libssh2_sha1_init(x) _libssh2_sha1_init(x) #ifdef HAVE_OPAQUE_STRUCTS #define libssh2_sha1_update(ctx, data, len) EVP_DigestUpdate(ctx, data, len) #define libssh2_sha1_final(ctx, out) do { \ EVP_DigestFinal(ctx, out, NULL); \ EVP_MD_CTX_free(ctx); \ } while(0) #else #define libssh2_sha1_update(ctx, data, len) EVP_DigestUpdate(&(ctx), data, len) #define libssh2_sha1_final(ctx, out) EVP_DigestFinal(&(ctx), out, NULL) #endif int _libssh2_sha1(const unsigned char *message, size_t len, unsigned char *out); #define libssh2_sha1(x,y,z) _libssh2_sha1(x,y,z) #ifdef HAVE_OPAQUE_STRUCTS #define libssh2_sha256_ctx EVP_MD_CTX * #else #define libssh2_sha256_ctx EVP_MD_CTX #endif /* returns 0 in case of failure */ int _libssh2_sha256_init(libssh2_sha256_ctx *ctx); #define libssh2_sha256_init(x) _libssh2_sha256_init(x) #ifdef HAVE_OPAQUE_STRUCTS #define libssh2_sha256_update(ctx, data, len) EVP_DigestUpdate(ctx, data, len) #define libssh2_sha256_final(ctx, out) do { \ EVP_DigestFinal(ctx, out, NULL); \ EVP_MD_CTX_free(ctx); \ } while(0) #else #define libssh2_sha256_update(ctx, data, len) \ EVP_DigestUpdate(&(ctx), data, len) #define libssh2_sha256_final(ctx, out) EVP_DigestFinal(&(ctx), out, NULL) #endif int _libssh2_sha256(const unsigned char *message, size_t len, unsigned char *out); #define libssh2_sha256(x,y,z) _libssh2_sha256(x,y,z) #ifdef HAVE_OPAQUE_STRUCTS #define libssh2_sha384_ctx EVP_MD_CTX * #else #define libssh2_sha384_ctx EVP_MD_CTX #endif /* returns 0 in case of failure */ int _libssh2_sha384_init(libssh2_sha384_ctx *ctx); #define libssh2_sha384_init(x) _libssh2_sha384_init(x) #ifdef HAVE_OPAQUE_STRUCTS #define libssh2_sha384_update(ctx, data, len) EVP_DigestUpdate(ctx, data, len) #define libssh2_sha384_final(ctx, out) do { \ EVP_DigestFinal(ctx, out, NULL); \ EVP_MD_CTX_free(ctx); \ } while(0) #else #define libssh2_sha384_update(ctx, data, len) \ EVP_DigestUpdate(&(ctx), data, len) #define libssh2_sha384_final(ctx, out) EVP_DigestFinal(&(ctx), out, NULL) #endif int _libssh2_sha384(const unsigned char *message, size_t len, unsigned char *out); #define libssh2_sha384(x,y,z) _libssh2_sha384(x,y,z) #ifdef HAVE_OPAQUE_STRUCTS #define libssh2_sha512_ctx EVP_MD_CTX * #else #define libssh2_sha512_ctx EVP_MD_CTX #endif /* returns 0 in case of failure */ int _libssh2_sha512_init(libssh2_sha512_ctx *ctx); #define libssh2_sha512_init(x) _libssh2_sha512_init(x) #ifdef HAVE_OPAQUE_STRUCTS #define libssh2_sha512_update(ctx, data, len) EVP_DigestUpdate(ctx, data, len) #define libssh2_sha512_final(ctx, out) do { \ EVP_DigestFinal(ctx, out, NULL); \ EVP_MD_CTX_free(ctx); \ } while(0) #else #define libssh2_sha512_update(ctx, data, len) \ EVP_DigestUpdate(&(ctx), data, len) #define libssh2_sha512_final(ctx, out) EVP_DigestFinal(&(ctx), out, NULL) #endif int _libssh2_sha512(const unsigned char *message, size_t len, unsigned char *out); #define libssh2_sha512(x,y,z) _libssh2_sha512(x,y,z) #ifdef HAVE_OPAQUE_STRUCTS #define libssh2_md5_ctx EVP_MD_CTX * #else #define libssh2_md5_ctx EVP_MD_CTX #endif /* returns 0 in case of failure */ int _libssh2_md5_init(libssh2_md5_ctx *ctx); #define libssh2_md5_init(x) _libssh2_md5_init(x) #ifdef HAVE_OPAQUE_STRUCTS #define libssh2_md5_update(ctx, data, len) EVP_DigestUpdate(ctx, data, len) #define libssh2_md5_final(ctx, out) do { \ EVP_DigestFinal(ctx, out, NULL); \ EVP_MD_CTX_free(ctx); \ } while(0) #else #define libssh2_md5_update(ctx, data, len) EVP_DigestUpdate(&(ctx), data, len) #define libssh2_md5_final(ctx, out) EVP_DigestFinal(&(ctx), out, NULL) #endif #ifdef HAVE_OPAQUE_STRUCTS #define libssh2_hmac_ctx HMAC_CTX * #define libssh2_hmac_ctx_init(ctx) ctx = HMAC_CTX_new() #define libssh2_hmac_sha1_init(ctx, key, keylen) \ HMAC_Init_ex(*(ctx), key, (int)keylen, EVP_sha1(), NULL) #define libssh2_hmac_md5_init(ctx, key, keylen) \ HMAC_Init_ex(*(ctx), key, (int)keylen, EVP_md5(), NULL) #define libssh2_hmac_ripemd160_init(ctx, key, keylen) \ HMAC_Init_ex(*(ctx), key, (int)keylen, EVP_ripemd160(), NULL) #define libssh2_hmac_sha256_init(ctx, key, keylen) \ HMAC_Init_ex(*(ctx), key, (int)keylen, EVP_sha256(), NULL) #define libssh2_hmac_sha512_init(ctx, key, keylen) \ HMAC_Init_ex(*(ctx), key, (int)keylen, EVP_sha512(), NULL) #ifdef LIBSSH2_WOLFSSL /* FIXME: upstream bug as of v5.6.0: datalen is int instead of size_t */ #define libssh2_hmac_update(ctx, data, datalen) \ HMAC_Update(ctx, data, (int)datalen) #else #define libssh2_hmac_update(ctx, data, datalen) \ HMAC_Update(ctx, data, datalen) #endif /* LIBSSH2_WOLFSSL */ #define libssh2_hmac_final(ctx, data) HMAC_Final(ctx, data, NULL) #define libssh2_hmac_cleanup(ctx) HMAC_CTX_free(*(ctx)) #else #define libssh2_hmac_ctx HMAC_CTX #define libssh2_hmac_ctx_init(ctx) \ HMAC_CTX_init(&ctx) #define libssh2_hmac_sha1_init(ctx, key, keylen) \ HMAC_Init_ex(ctx, key, (int)keylen, EVP_sha1(), NULL) #define libssh2_hmac_md5_init(ctx, key, keylen) \ HMAC_Init_ex(ctx, key, (int)keylen, EVP_md5(), NULL) #define libssh2_hmac_ripemd160_init(ctx, key, keylen) \ HMAC_Init_ex(ctx, key, (int)keylen, EVP_ripemd160(), NULL) #define libssh2_hmac_sha256_init(ctx, key, keylen) \ HMAC_Init_ex(ctx, key, (int)keylen, EVP_sha256(), NULL) #define libssh2_hmac_sha512_init(ctx, key, keylen) \ HMAC_Init_ex(ctx, key, (int)keylen, EVP_sha512(), NULL) #define libssh2_hmac_update(ctx, data, datalen) \ HMAC_Update(&(ctx), data, datalen) #define libssh2_hmac_final(ctx, data) HMAC_Final(&(ctx), data, NULL) #define libssh2_hmac_cleanup(ctx) HMAC_cleanup(ctx) #endif extern void _libssh2_openssl_crypto_init(void); extern void _libssh2_openssl_crypto_exit(void); #define libssh2_crypto_init() _libssh2_openssl_crypto_init() #define libssh2_crypto_exit() _libssh2_openssl_crypto_exit() #if LIBSSH2_RSA #define libssh2_rsa_ctx RSA #define _libssh2_rsa_free(rsactx) RSA_free(rsactx) #endif #if LIBSSH2_DSA #define libssh2_dsa_ctx DSA #define _libssh2_dsa_free(dsactx) DSA_free(dsactx) #endif #if LIBSSH2_ECDSA #define libssh2_ecdsa_ctx EC_KEY #define _libssh2_ecdsa_free(ecdsactx) EC_KEY_free(ecdsactx) #define _libssh2_ec_key EC_KEY typedef enum { LIBSSH2_EC_CURVE_NISTP256 = NID_X9_62_prime256v1, LIBSSH2_EC_CURVE_NISTP384 = NID_secp384r1, LIBSSH2_EC_CURVE_NISTP521 = NID_secp521r1 } libssh2_curve_type; #else #define _libssh2_ec_key void #endif /* LIBSSH2_ECDSA */ #if LIBSSH2_ED25519 #define libssh2_ed25519_ctx EVP_PKEY #define _libssh2_ed25519_free(ctx) EVP_PKEY_free(ctx) #endif /* ED25519 */ #define _libssh2_cipher_type(name) const EVP_CIPHER *(*name)(void) #ifdef HAVE_OPAQUE_STRUCTS #define _libssh2_cipher_ctx EVP_CIPHER_CTX * #else #define _libssh2_cipher_ctx EVP_CIPHER_CTX #endif #define _libssh2_cipher_aes256gcm EVP_aes_256_gcm #define _libssh2_cipher_aes128gcm EVP_aes_128_gcm #define _libssh2_cipher_aes256 EVP_aes_256_cbc #define _libssh2_cipher_aes192 EVP_aes_192_cbc #define _libssh2_cipher_aes128 EVP_aes_128_cbc #define _libssh2_cipher_aes128ctr EVP_aes_128_ctr #define _libssh2_cipher_aes192ctr EVP_aes_192_ctr #define _libssh2_cipher_aes256ctr EVP_aes_256_ctr #define _libssh2_cipher_blowfish EVP_bf_cbc #define _libssh2_cipher_arcfour EVP_rc4 #define _libssh2_cipher_cast5 EVP_cast5_cbc #define _libssh2_cipher_3des EVP_des_ede3_cbc #ifdef HAVE_OPAQUE_STRUCTS #define _libssh2_cipher_dtor(ctx) EVP_CIPHER_CTX_free(*(ctx)) #else #define _libssh2_cipher_dtor(ctx) EVP_CIPHER_CTX_cleanup(ctx) #endif #define _libssh2_bn BIGNUM #define _libssh2_bn_ctx BN_CTX #define _libssh2_bn_ctx_new() BN_CTX_new() #define _libssh2_bn_ctx_free(bnctx) BN_CTX_free(bnctx) #define _libssh2_bn_init() BN_new() #define _libssh2_bn_init_from_bin() _libssh2_bn_init() #define _libssh2_bn_set_word(bn, val) BN_set_word(bn, val) #define _libssh2_bn_from_bin(bn, len, val) BN_bin2bn(val, (int)len, bn) #define _libssh2_bn_to_bin(bn, val) BN_bn2bin(bn, val) #define _libssh2_bn_bytes(bn) BN_num_bytes(bn) #define _libssh2_bn_bits(bn) BN_num_bits(bn) #define _libssh2_bn_free(bn) BN_clear_free(bn) /* Default generate and safe prime sizes for diffie-hellman-group-exchange-sha1 */ #define LIBSSH2_DH_GEX_MINGROUP 2048 #define LIBSSH2_DH_GEX_OPTGROUP 4096 #define LIBSSH2_DH_GEX_MAXGROUP 8192 #define LIBSSH2_DH_MAX_MODULUS_BITS 16384 #define _libssh2_dh_ctx BIGNUM * #define libssh2_dh_init(dhctx) _libssh2_dh_init(dhctx) #define libssh2_dh_key_pair(dhctx, public, g, p, group_order, bnctx) \ _libssh2_dh_key_pair(dhctx, public, g, p, group_order, bnctx) #define libssh2_dh_secret(dhctx, secret, f, p, bnctx) \ _libssh2_dh_secret(dhctx, secret, f, p, bnctx) #define libssh2_dh_dtor(dhctx) _libssh2_dh_dtor(dhctx) extern void _libssh2_dh_init(_libssh2_dh_ctx *dhctx); extern int _libssh2_dh_key_pair(_libssh2_dh_ctx *dhctx, _libssh2_bn *public, _libssh2_bn *g, _libssh2_bn *p, int group_order, _libssh2_bn_ctx *bnctx); extern int _libssh2_dh_secret(_libssh2_dh_ctx *dhctx, _libssh2_bn *secret, _libssh2_bn *f, _libssh2_bn *p, _libssh2_bn_ctx *bnctx); extern void _libssh2_dh_dtor(_libssh2_dh_ctx *dhctx); extern int _libssh2_openssl_random(void *buf, size_t len); const EVP_CIPHER *_libssh2_EVP_aes_128_ctr(void); const EVP_CIPHER *_libssh2_EVP_aes_192_ctr(void); const EVP_CIPHER *_libssh2_EVP_aes_256_ctr(void); #endif /* __LIBSSH2_OPENSSL_H */