/* * Copyright (C) 2013-2015 Marc Hoersken * All rights reserved. * * 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. */ /* required for cross-compilation against the w64 mingw-runtime package */ #if defined(_WIN32_WINNT) && (_WIN32_WINNT < 0x0600) #undef _WIN32_WINNT #endif #ifndef _WIN32_WINNT #define _WIN32_WINNT 0x0600 #endif #include #include #define LIBSSH2_MD5 1 #define LIBSSH2_HMAC_RIPEMD 0 #define LIBSSH2_HMAC_SHA256 1 #define LIBSSH2_HMAC_SHA512 1 #define LIBSSH2_AES 1 #define LIBSSH2_AES_CTR 0 #define LIBSSH2_BLOWFISH 0 #define LIBSSH2_RC4 1 #define LIBSSH2_CAST 0 #define LIBSSH2_3DES 1 #define LIBSSH2_RSA 1 #define LIBSSH2_DSA 1 #define MD5_DIGEST_LENGTH 16 #define SHA_DIGEST_LENGTH 20 #define SHA256_DIGEST_LENGTH 32 #define SHA512_DIGEST_LENGTH 64 /*******************************************************************/ /* * Windows CNG backend: Global context handles */ struct _libssh2_wincng_ctx { BCRYPT_ALG_HANDLE hAlgRNG; BCRYPT_ALG_HANDLE hAlgHashMD5; BCRYPT_ALG_HANDLE hAlgHashSHA1; BCRYPT_ALG_HANDLE hAlgHashSHA256; BCRYPT_ALG_HANDLE hAlgHashSHA512; BCRYPT_ALG_HANDLE hAlgHmacMD5; BCRYPT_ALG_HANDLE hAlgHmacSHA1; BCRYPT_ALG_HANDLE hAlgHmacSHA256; BCRYPT_ALG_HANDLE hAlgHmacSHA512; BCRYPT_ALG_HANDLE hAlgRSA; BCRYPT_ALG_HANDLE hAlgDSA; BCRYPT_ALG_HANDLE hAlgAES_CBC; BCRYPT_ALG_HANDLE hAlgRC4_NA; BCRYPT_ALG_HANDLE hAlg3DES_CBC; }; struct _libssh2_wincng_ctx _libssh2_wincng; /*******************************************************************/ /* * Windows CNG backend: Generic functions */ void _libssh2_wincng_init(void); void _libssh2_wincng_free(void); #define libssh2_crypto_init() \ _libssh2_wincng_init() #define libssh2_crypto_exit() \ _libssh2_wincng_free() #define _libssh2_random(buf, len) \ _libssh2_wincng_random(buf, len) #define libssh2_prepare_iovec(vec, len) /* Empty. */ /*******************************************************************/ /* * Windows CNG backend: Hash structure */ typedef struct __libssh2_wincng_hash_ctx { BCRYPT_HASH_HANDLE hHash; unsigned char *pbHashObject; unsigned long dwHashObject; unsigned long cbHash; } _libssh2_wincng_hash_ctx; /* * Windows CNG backend: Hash functions */ #define libssh2_sha1_ctx _libssh2_wincng_hash_ctx #define libssh2_sha1_init(ctx) \ (_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHashSHA1, \ SHA_DIGEST_LENGTH, NULL, 0) == 0) #define libssh2_sha1_update(ctx, data, datalen) \ _libssh2_wincng_hash_update(&ctx, (unsigned char *) data, datalen) #define libssh2_sha1_final(ctx, hash) \ _libssh2_wincng_hash_final(&ctx, hash) #define libssh2_sha1(data, datalen, hash) \ _libssh2_wincng_hash(data, datalen, _libssh2_wincng.hAlgHashSHA1, \ hash, SHA_DIGEST_LENGTH) #define libssh2_sha256_ctx _libssh2_wincng_hash_ctx #define libssh2_sha256_init(ctx) \ (_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHashSHA256, \ SHA256_DIGEST_LENGTH, NULL, 0) == 0) #define libssh2_sha256_update(ctx, data, datalen) \ _libssh2_wincng_hash_update(&ctx, (unsigned char *) data, datalen) #define libssh2_sha256_final(ctx, hash) \ _libssh2_wincng_hash_final(&ctx, hash) #define libssh2_sha256(data, datalen, hash) \ _libssh2_wincng_hash(data, datalen, _libssh2_wincng.hAlgHashSHA256, \ hash, SHA256_DIGEST_LENGTH) #define libssh2_sha512_ctx _libssh2_wincng_hash_ctx #define libssh2_sha512_init(ctx) \ (_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHashSHA512, \ SHA512_DIGEST_LENGTH, NULL, 0) == 0) #define libssh2_sha512_update(ctx, data, datalen) \ _libssh2_wincng_hash_update(&ctx, (unsigned char *) data, datalen) #define libssh2_sha512_final(ctx, hash) \ _libssh2_wincng_hash_final(&ctx, hash) #define libssh2_sha512(data, datalen, hash) \ _libssh2_wincng_hash(data, datalen, _libssh2_wincng.hAlgHashSHA512, \ hash, SHA512_DIGEST_LENGTH) #define libssh2_md5_ctx _libssh2_wincng_hash_ctx #define libssh2_md5_init(ctx) \ (_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHashMD5, \ MD5_DIGEST_LENGTH, NULL, 0) == 0) #define libssh2_md5_update(ctx, data, datalen) \ _libssh2_wincng_hash_update(&ctx, (unsigned char *) data, datalen) #define libssh2_md5_final(ctx, hash) \ _libssh2_wincng_hash_final(&ctx, hash) #define libssh2_md5(data, datalen, hash) \ _libssh2_wincng_hash(data, datalen, _libssh2_wincng.hAlgHashMD5, \ hash, MD5_DIGEST_LENGTH) /* * Windows CNG backend: HMAC functions */ #define libssh2_hmac_ctx _libssh2_wincng_hash_ctx #define libssh2_hmac_ctx_init(ctx) #define libssh2_hmac_sha1_init(ctx, key, keylen) \ _libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHmacSHA1, \ SHA_DIGEST_LENGTH, key, keylen) #define libssh2_hmac_md5_init(ctx, key, keylen) \ _libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHmacMD5, \ MD5_DIGEST_LENGTH, key, keylen) #define libssh2_hmac_ripemd160_init(ctx, key, keylen) /* not implemented */ #define libssh2_hmac_sha256_init(ctx, key, keylen) \ _libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHmacSHA256, \ SHA256_DIGEST_LENGTH, key, keylen) #define libssh2_hmac_sha512_init(ctx, key, keylen) \ _libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHmacSHA512, \ SHA512_DIGEST_LENGTH, key, keylen) #define libssh2_hmac_update(ctx, data, datalen) \ _libssh2_wincng_hash_update(&ctx, (unsigned char *) data, datalen) #define libssh2_hmac_final(ctx, hash) \ _libssh2_wincng_hmac_final(&ctx, hash) #define libssh2_hmac_cleanup(ctx) \ _libssh2_wincng_hmac_cleanup(ctx) /*******************************************************************/ /* * Windows CNG backend: Key Context structure */ typedef struct __libssh2_wincng_key_ctx { BCRYPT_KEY_HANDLE hKey; unsigned char *pbKeyObject; unsigned long cbKeyObject; } _libssh2_wincng_key_ctx; /* * Windows CNG backend: RSA functions */ #define libssh2_rsa_ctx _libssh2_wincng_key_ctx #define _libssh2_rsa_new(rsactx, e, e_len, n, n_len, \ d, d_len, p, p_len, q, q_len, \ e1, e1_len, e2, e2_len, c, c_len) \ _libssh2_wincng_rsa_new(rsactx, e, e_len, n, n_len, \ d, d_len, p, p_len, q, q_len, \ e1, e1_len, e2, e2_len, c, c_len) #define _libssh2_rsa_new_private(rsactx, s, filename, passphrase) \ _libssh2_wincng_rsa_new_private(rsactx, s, filename, passphrase) #define _libssh2_rsa_new_private_frommemory(rsactx, s, filedata, \ filedata_len, passphrase) \ _libssh2_wincng_rsa_new_private_frommemory(rsactx, s, filedata, \ filedata_len, passphrase) #define _libssh2_rsa_sha1_sign(s, rsactx, hash, hash_len, sig, sig_len) \ _libssh2_wincng_rsa_sha1_sign(s, rsactx, hash, hash_len, sig, sig_len) #define _libssh2_rsa_sha1_verify(rsactx, sig, sig_len, m, m_len) \ _libssh2_wincng_rsa_sha1_verify(rsactx, sig, sig_len, m, m_len) #define _libssh2_rsa_free(rsactx) \ _libssh2_wincng_rsa_free(rsactx) /* * Windows CNG backend: DSA functions */ #define libssh2_dsa_ctx _libssh2_wincng_key_ctx #define _libssh2_dsa_new(dsactx, p, p_len, q, q_len, \ g, g_len, y, y_len, x, x_len) \ _libssh2_wincng_dsa_new(dsactx, p, p_len, q, q_len, \ g, g_len, y, y_len, x, x_len) #define _libssh2_dsa_new_private(dsactx, s, filename, passphrase) \ _libssh2_wincng_dsa_new_private(dsactx, s, filename, passphrase) #define _libssh2_dsa_new_private_frommemory(dsactx, s, filedata, \ filedata_len, passphrase) \ _libssh2_wincng_dsa_new_private_frommemory(dsactx, s, filedata, \ filedata_len, passphrase) #define _libssh2_dsa_sha1_sign(dsactx, hash, hash_len, sig) \ _libssh2_wincng_dsa_sha1_sign(dsactx, hash, hash_len, sig) #define _libssh2_dsa_sha1_verify(dsactx, sig, m, m_len) \ _libssh2_wincng_dsa_sha1_verify(dsactx, sig, m, m_len) #define _libssh2_dsa_free(dsactx) \ _libssh2_wincng_dsa_free(dsactx) /* * Windows CNG backend: Key functions */ #define _libssh2_pub_priv_keyfile(s, m, m_len, p, p_len, pk, pw) \ _libssh2_wincng_pub_priv_keyfile(s, m, m_len, p, p_len, pk, pw) #define _libssh2_pub_priv_keyfilememory(s, m, m_len, p, p_len, \ pk, pk_len, pw) \ _libssh2_wincng_pub_priv_keyfilememory(s, m, m_len, p, p_len, \ pk, pk_len, pw) /*******************************************************************/ /* * Windows CNG backend: Cipher Context structure */ struct _libssh2_wincng_cipher_ctx { BCRYPT_KEY_HANDLE hKey; unsigned char *pbKeyObject; unsigned char *pbIV; unsigned long dwKeyObject; unsigned long dwIV; unsigned long dwBlockLength; }; #define _libssh2_cipher_ctx struct _libssh2_wincng_cipher_ctx /* * Windows CNG backend: Cipher Type structure */ struct _libssh2_wincng_cipher_type { BCRYPT_ALG_HANDLE *phAlg; unsigned long dwKeyLength; unsigned long dwUseIV; }; #define _libssh2_cipher_type(type) struct _libssh2_wincng_cipher_type type #define _libssh2_cipher_aes256ctr { NULL, 32, 1 } /* not supported */ #define _libssh2_cipher_aes192ctr { NULL, 24, 1 } /* not supported */ #define _libssh2_cipher_aes128ctr { NULL, 16, 1 } /* not supported */ #define _libssh2_cipher_aes256 { &_libssh2_wincng.hAlgAES_CBC, 32, 1 } #define _libssh2_cipher_aes192 { &_libssh2_wincng.hAlgAES_CBC, 24, 1 } #define _libssh2_cipher_aes128 { &_libssh2_wincng.hAlgAES_CBC, 16, 1 } #define _libssh2_cipher_blowfish { NULL, 16, 0 } /* not supported */ #define _libssh2_cipher_arcfour { &_libssh2_wincng.hAlgRC4_NA, 16, 0 } #define _libssh2_cipher_cast5 { NULL, 16, 0 } /* not supported */ #define _libssh2_cipher_3des { &_libssh2_wincng.hAlg3DES_CBC, 24, 1 } /* * Windows CNG backend: Cipher functions */ #define _libssh2_cipher_init(ctx, type, iv, secret, encrypt) \ _libssh2_wincng_cipher_init(ctx, type, iv, secret, encrypt) #define _libssh2_cipher_crypt(ctx, type, encrypt, block, blocklen) \ _libssh2_wincng_cipher_crypt(ctx, type, encrypt, block, blocklen) #define _libssh2_cipher_dtor(ctx) \ _libssh2_wincng_cipher_dtor(ctx) /*******************************************************************/ /* * Windows CNG backend: BigNumber Context */ #define _libssh2_bn_ctx int /* not used */ #define _libssh2_bn_ctx_new() 0 /* not used */ #define _libssh2_bn_ctx_free(bnctx) ((void)0) /* not used */ /*******************************************************************/ /* * Windows CNG backend: BigNumber structure */ struct _libssh2_wincng_bignum { unsigned char *bignum; unsigned long length; }; #define _libssh2_bn struct _libssh2_wincng_bignum /* * Windows CNG backend: BigNumber functions */ _libssh2_bn *_libssh2_wincng_bignum_init(void); #define _libssh2_bn_init() \ _libssh2_wincng_bignum_init() #define _libssh2_bn_init_from_bin() \ _libssh2_bn_init() #define _libssh2_bn_rand(bn, bits, top, bottom) \ _libssh2_wincng_bignum_rand(bn, bits, top, bottom) #define _libssh2_bn_mod_exp(r, a, p, m, ctx) \ _libssh2_wincng_bignum_mod_exp(r, a, p, m, ctx) #define _libssh2_bn_set_word(bn, word) \ _libssh2_wincng_bignum_set_word(bn, word) #define _libssh2_bn_from_bin(bn, len, bin) \ _libssh2_wincng_bignum_from_bin(bn, len, bin) #define _libssh2_bn_to_bin(bn, bin) \ _libssh2_wincng_bignum_to_bin(bn, bin) #define _libssh2_bn_bytes(bn) bn->length #define _libssh2_bn_bits(bn) \ _libssh2_wincng_bignum_bits(bn) #define _libssh2_bn_free(bn) \ _libssh2_wincng_bignum_free(bn) /*******************************************************************/ /* * Windows CNG backend: forward declarations */ void _libssh2_wincng_init(void); void _libssh2_wincng_free(void); int _libssh2_wincng_random(void *buf, int len); void _libssh2_init_aes_ctr(void); int _libssh2_wincng_hash_init(_libssh2_wincng_hash_ctx *ctx, BCRYPT_ALG_HANDLE hAlg, unsigned long hashlen, unsigned char *key, unsigned long keylen); int _libssh2_wincng_hash_update(_libssh2_wincng_hash_ctx *ctx, const unsigned char *data, unsigned long datalen); int _libssh2_wincng_hash_final(_libssh2_wincng_hash_ctx *ctx, unsigned char *hash); int _libssh2_wincng_hash(unsigned char *data, unsigned long datalen, BCRYPT_ALG_HANDLE hAlg, unsigned char *hash, unsigned long hashlen); int _libssh2_wincng_hmac_final(_libssh2_wincng_hash_ctx *ctx, unsigned char *hash); void _libssh2_wincng_hmac_cleanup(_libssh2_wincng_hash_ctx *ctx); int _libssh2_wincng_key_sha1_verify(_libssh2_wincng_key_ctx *ctx, const unsigned char *sig, unsigned long sig_len, const unsigned char *m, unsigned long m_len, unsigned long flags); int _libssh2_wincng_rsa_new(libssh2_rsa_ctx **rsa, const unsigned char *edata, unsigned long elen, const unsigned char *ndata, unsigned long nlen, const unsigned char *ddata, unsigned long dlen, const unsigned char *pdata, unsigned long plen, const unsigned char *qdata, unsigned long qlen, const unsigned char *e1data, unsigned long e1len, const unsigned char *e2data, unsigned long e2len, const unsigned char *coeffdata, unsigned long coefflen); int _libssh2_wincng_rsa_new_private(libssh2_rsa_ctx **rsa, LIBSSH2_SESSION *session, const char *filename, const unsigned char *passphrase); int _libssh2_wincng_rsa_new_private_frommemory(libssh2_rsa_ctx **rsa, LIBSSH2_SESSION *session, const char *filedata, size_t filedata_len, unsigned const char *passphrase); int _libssh2_wincng_rsa_sha1_verify(libssh2_rsa_ctx *rsa, const unsigned char *sig, unsigned long sig_len, const unsigned char *m, unsigned long m_len); int _libssh2_wincng_rsa_sha1_sign(LIBSSH2_SESSION *session, libssh2_rsa_ctx *rsa, const unsigned char *hash, size_t hash_len, unsigned char **signature, size_t *signature_len); void _libssh2_wincng_rsa_free(libssh2_rsa_ctx *rsa); #if LIBSSH2_DSA int _libssh2_wincng_dsa_new(libssh2_dsa_ctx **dsa, const unsigned char *pdata, unsigned long plen, const unsigned char *qdata, unsigned long qlen, const unsigned char *gdata, unsigned long glen, const unsigned char *ydata, unsigned long ylen, const unsigned char *xdata, unsigned long xlen); int _libssh2_wincng_dsa_new_private(libssh2_dsa_ctx **dsa, LIBSSH2_SESSION *session, const char *filename, const unsigned char *passphrase); int _libssh2_wincng_dsa_new_private_frommemory(libssh2_dsa_ctx **dsa, LIBSSH2_SESSION *session, const char *filedata, size_t filedata_len, unsigned const char *passphrase); int _libssh2_wincng_dsa_sha1_verify(libssh2_dsa_ctx *dsa, const unsigned char *sig_fixed, const unsigned char *m, unsigned long m_len); int _libssh2_wincng_dsa_sha1_sign(libssh2_dsa_ctx *dsa, const unsigned char *hash, unsigned long hash_len, unsigned char *sig_fixed); void _libssh2_wincng_dsa_free(libssh2_dsa_ctx *dsa); #endif int _libssh2_wincng_pub_priv_keyfile(LIBSSH2_SESSION *session, unsigned char **method, size_t *method_len, unsigned char **pubkeydata, size_t *pubkeydata_len, const char *privatekey, const char *passphrase); int _libssh2_wincng_pub_priv_keyfilememory(LIBSSH2_SESSION *session, unsigned char **method, size_t *method_len, unsigned char **pubkeydata, size_t *pubkeydata_len, const char *privatekeydata, size_t privatekeydata_len, const char *passphrase); int _libssh2_wincng_cipher_init(_libssh2_cipher_ctx *ctx, _libssh2_cipher_type(type), unsigned char *iv, unsigned char *secret, int encrypt); int _libssh2_wincng_cipher_crypt(_libssh2_cipher_ctx *ctx, _libssh2_cipher_type(type), int encrypt, unsigned char *block, size_t blocklen); void _libssh2_wincng_cipher_dtor(_libssh2_cipher_ctx *ctx); _libssh2_bn * _libssh2_wincng_bignum_init(void); int _libssh2_wincng_bignum_rand(_libssh2_bn *rnd, int bits, int top, int bottom); int _libssh2_wincng_bignum_mod_exp(_libssh2_bn *r, _libssh2_bn *a, _libssh2_bn *p, _libssh2_bn *m, _libssh2_bn_ctx *bnctx); int _libssh2_wincng_bignum_set_word(_libssh2_bn *bn, unsigned long word); unsigned long _libssh2_wincng_bignum_bits(const _libssh2_bn *bn); void _libssh2_wincng_bignum_from_bin(_libssh2_bn *bn, unsigned long len, const unsigned char *bin); void _libssh2_wincng_bignum_to_bin(const _libssh2_bn *bn, unsigned char *bin); void _libssh2_wincng_bignum_free(_libssh2_bn *bn);