1 files changed, 440 insertions, 0 deletions

diff --git a/src/lib/libcrypto/evp/evp_enc.c b/src/lib/libcrypto/evp/evp_enc.c
new file mode 100644
index 0000000000..30e0ca4d9f
--- /dev/null
+++ b/src/lib/libcrypto/evp/evp_enc.c
@@ -0,0 +1,440 @@
+/* crypto/evp/evp_enc.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:
+ * 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.]
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/evp.h>
+#include <openssl/err.h>
+#include <openssl/rand.h>
+#ifndef OPENSSL_NO_ENGINE
+#include <openssl/engine.h>
+#endif
+#include "evp_locl.h"
+
+#ifdef OPENSSL_FIPS
+        #define M_do_cipher(ctx, out, in, inl) \
+                EVP_Cipher(ctx,out,in,inl)
+#else
+        #define M_do_cipher(ctx, out, in, inl) \
+                ctx->cipher->do_cipher(ctx,out,in,inl)
+#endif
+
+const char EVP_version[]="EVP" OPENSSL_VERSION_PTEXT;
+
+EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void)
+        {
+        EVP_CIPHER_CTX *ctx=OPENSSL_malloc(sizeof *ctx);
+        if (ctx)
+                EVP_CIPHER_CTX_init(ctx);
+        return ctx;
+        }
+
+int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+             const unsigned char *key, const unsigned char *iv, int enc)
+        {
+        if (cipher)
+                EVP_CIPHER_CTX_init(ctx);
+        return EVP_CipherInit_ex(ctx,cipher,NULL,key,iv,enc);
+        }
+
+int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
+             const unsigned char *in, int inl)
+        {
+        if (ctx->encrypt)
+                return EVP_EncryptUpdate(ctx,out,outl,in,inl);
+        else    return EVP_DecryptUpdate(ctx,out,outl,in,inl);
+        }
+
+int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
+        {
+        if (ctx->encrypt)
+                return EVP_EncryptFinal_ex(ctx,out,outl);
+        else    return EVP_DecryptFinal_ex(ctx,out,outl);
+        }
+
+int EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
+        {
+        if (ctx->encrypt)
+                return EVP_EncryptFinal(ctx,out,outl);
+        else    return EVP_DecryptFinal(ctx,out,outl);
+        }
+
+int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+             const unsigned char *key, const unsigned char *iv)
+        {
+        return EVP_CipherInit(ctx, cipher, key, iv, 1);
+        }
+
+int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx,const EVP_CIPHER *cipher, ENGINE *impl,
+                const unsigned char *key, const unsigned char *iv)
+        {
+        return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 1);
+        }
+
+int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+             const unsigned char *key, const unsigned char *iv)
+        {
+        return EVP_CipherInit(ctx, cipher, key, iv, 0);
+        }
+
+int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl,
+             const unsigned char *key, const unsigned char *iv)
+        {
+        return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0);
+        }
+
+int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
+             const unsigned char *in, int inl)
+        {
+        int i,j,bl;
+
+        if (inl <= 0)
+                {
+                *outl = 0;
+                return inl == 0;
+                }
+
+        if(ctx->buf_len == 0 && (inl&(ctx->block_mask)) == 0)
+                {
+                if(M_do_cipher(ctx,out,in,inl))
+                        {
+                        *outl=inl;
+                        return 1;
+                        }
+                else
+                        {
+                        *outl=0;
+                        return 0;
+                        }
+                }
+        i=ctx->buf_len;
+        bl=ctx->cipher->block_size;
+        OPENSSL_assert(bl <= (int)sizeof(ctx->buf));
+        if (i != 0)
+                {
+                if (i+inl < bl)
+                        {
+                        memcpy(&(ctx->buf[i]),in,inl);
+                        ctx->buf_len+=inl;
+                        *outl=0;
+                        return 1;
+                        }
+                else
+                        {
+                        j=bl-i;
+                        memcpy(&(ctx->buf[i]),in,j);
+                        if(!M_do_cipher(ctx,out,ctx->buf,bl)) return 0;
+                        inl-=j;
+                        in+=j;
+                        out+=bl;
+                        *outl=bl;
+                        }
+                }
+        else
+                *outl = 0;
+        i=inl&(bl-1);
+        inl-=i;
+        if (inl > 0)
+                {
+                if(!M_do_cipher(ctx,out,in,inl)) return 0;
+                *outl+=inl;
+                }
+
+        if (i != 0)
+                memcpy(ctx->buf,&(in[inl]),i);
+        ctx->buf_len=i;
+        return 1;
+        }
+
+int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
+        {
+        int ret;
+        ret = EVP_EncryptFinal_ex(ctx, out, outl);
+        return ret;
+        }
+
+int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
+        {
+        int n,ret;
+        unsigned int i, b, bl;
+
+        b=ctx->cipher->block_size;
+        OPENSSL_assert(b <= sizeof ctx->buf);
+        if (b == 1)
+                {
+                *outl=0;
+                return 1;
+                }
+        bl=ctx->buf_len;
+        if (ctx->flags & EVP_CIPH_NO_PADDING)
+                {
+                if(bl)
+                        {
+                        EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX,EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
+                        return 0;
+                        }
+                *outl = 0;
+                return 1;
+                }
+
+        n=b-bl;
+        for (i=bl; i<b; i++)
+                ctx->buf[i]=n;
+        ret=M_do_cipher(ctx,out,ctx->buf,b);
+
+
+        if(ret)
+                *outl=b;
+
+        return ret;
+        }
+
+int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
+             const unsigned char *in, int inl)
+        {
+        int fix_len;
+        unsigned int b;
+
+        if (inl <= 0)
+                {
+                *outl = 0;
+                return inl == 0;
+                }
+
+        if (ctx->flags & EVP_CIPH_NO_PADDING)
+                return EVP_EncryptUpdate(ctx, out, outl, in, inl);
+
+        b=ctx->cipher->block_size;
+        OPENSSL_assert(b <= sizeof ctx->final);
+
+        if(ctx->final_used)
+                {
+                memcpy(out,ctx->final,b);
+                out+=b;
+                fix_len = 1;
+                }
+        else
+                fix_len = 0;
+
+
+        if(!EVP_EncryptUpdate(ctx,out,outl,in,inl))
+                return 0;
+
+        /* if we have 'decrypted' a multiple of block size, make sure
+         * we have a copy of this last block */
+        if (b > 1 && !ctx->buf_len)
+                {
+                *outl-=b;
+                ctx->final_used=1;
+                memcpy(ctx->final,&out[*outl],b);
+                }
+        else
+                ctx->final_used = 0;
+
+        if (fix_len)
+                *outl += b;
+                
+        return 1;
+        }
+
+int EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
+        {
+        int ret;
+        ret = EVP_DecryptFinal_ex(ctx, out, outl);
+        return ret;
+        }
+
+int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
+        {
+        int i,n;
+        unsigned int b;
+
+        *outl=0;
+        b=ctx->cipher->block_size;
+        if (ctx->flags & EVP_CIPH_NO_PADDING)
+                {
+                if(ctx->buf_len)
+                        {
+                        EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
+                        return 0;
+                        }
+                *outl = 0;
+                return 1;
+                }
+        if (b > 1)
+                {
+                if (ctx->buf_len || !ctx->final_used)
+                        {
+                        EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_WRONG_FINAL_BLOCK_LENGTH);
+                        return(0);
+                        }
+                OPENSSL_assert(b <= sizeof ctx->final);
+                n=ctx->final[b-1];
+                if (n == 0 || n > (int)b)
+                        {
+                        EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_BAD_DECRYPT);
+                        return(0);
+                        }
+                for (i=0; i<n; i++)
+                        {
+                        if (ctx->final[--b] != n)
+                                {
+                                EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_BAD_DECRYPT);
+                                return(0);
+                                }
+                        }
+                n=ctx->cipher->block_size-n;
+                for (i=0; i<n; i++)
+                        out[i]=ctx->final[i];
+                *outl=n;
+                }
+        else
+                *outl=0;
+        return(1);
+        }
+
+void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx)
+        {
+        if (ctx)
+                {
+                EVP_CIPHER_CTX_cleanup(ctx);
+                OPENSSL_free(ctx);
+                }
+        }
+
+int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen)
+        {
+        if(c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH) 
+                return EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_KEY_LENGTH, keylen, NULL);
+        if(c->key_len == keylen) return 1;
+        if((keylen > 0) && (c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH))
+                {
+                c->key_len = keylen;
+                return 1;
+                }
+        EVPerr(EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH,EVP_R_INVALID_KEY_LENGTH);
+        return 0;
+        }
+
+int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad)
+        {
+        if (pad) ctx->flags &= ~EVP_CIPH_NO_PADDING;
+        else ctx->flags |= EVP_CIPH_NO_PADDING;
+        return 1;
+        }
+
+int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key)
+        {
+        if (ctx->cipher->flags & EVP_CIPH_RAND_KEY)
+                return EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_RAND_KEY, 0, key);
+        if (RAND_bytes(key, ctx->key_len) <= 0)
+                return 0;
+        return 1;
+        }
+
+#ifndef OPENSSL_NO_ENGINE
+
+#ifdef OPENSSL_FIPS
+
+static int do_evp_enc_engine_full(EVP_CIPHER_CTX *ctx, const EVP_CIPHER **pcipher, ENGINE *impl)
+        {
+        if(impl)
+                {
+                if (!ENGINE_init(impl))
+                        {
+                        EVPerr(EVP_F_DO_EVP_ENC_ENGINE_FULL, EVP_R_INITIALIZATION_ERROR);
+                        return 0;
+                        }
+                }
+        else
+                /* Ask if an ENGINE is reserved for this job */
+                impl = ENGINE_get_cipher_engine((*pcipher)->nid);
+        if(impl)
+                {
+                /* There's an ENGINE for this job ... (apparently) */
+                const EVP_CIPHER *c = ENGINE_get_cipher(impl, (*pcipher)->nid);
+                if(!c)
+                        {
+                        /* One positive side-effect of US's export
+                         * control history, is that we should at least
+                         * be able to avoid using US mispellings of
+                         * "initialisation"? */
+                        EVPerr(EVP_F_DO_EVP_ENC_ENGINE_FULL, EVP_R_INITIALIZATION_ERROR);
+                        return 0;
+                        }
+                /* We'll use the ENGINE's private cipher definition */
+                *pcipher = c;
+                /* Store the ENGINE functional reference so we know
+                 * 'cipher' came from an ENGINE and we need to release
+                 * it when done. */
+                ctx->engine = impl;
+                }
+        else
+                ctx->engine = NULL;
+        return 1;
+        }
+
+void int_EVP_CIPHER_init_engine_callbacks(void)
+        {
+        int_EVP_CIPHER_set_engine_callbacks(
+                ENGINE_finish, do_evp_enc_engine_full);
+        }
+
+#endif
+
+#endif