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Diffstat (limited to 'openssl/crypto/evp/encode.c')
| -rw-r--r-- | openssl/crypto/evp/encode.c | 445 |
1 files changed, 0 insertions, 445 deletions
diff --git a/openssl/crypto/evp/encode.c b/openssl/crypto/evp/encode.c deleted file mode 100644 index 28546a84..00000000 --- a/openssl/crypto/evp/encode.c +++ /dev/null @@ -1,445 +0,0 @@ -/* crypto/evp/encode.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> - -#ifndef CHARSET_EBCDIC -#define conv_bin2ascii(a) (data_bin2ascii[(a)&0x3f]) -#define conv_ascii2bin(a) (data_ascii2bin[(a)&0x7f]) -#else -/* We assume that PEM encoded files are EBCDIC files - * (i.e., printable text files). Convert them here while decoding. - * When encoding, output is EBCDIC (text) format again. - * (No need for conversion in the conv_bin2ascii macro, as the - * underlying textstring data_bin2ascii[] is already EBCDIC) - */ -#define conv_bin2ascii(a) (data_bin2ascii[(a)&0x3f]) -#define conv_ascii2bin(a) (data_ascii2bin[os_toascii[a]&0x7f]) -#endif - -/* 64 char lines - * pad input with 0 - * left over chars are set to = - * 1 byte => xx== - * 2 bytes => xxx= - * 3 bytes => xxxx - */ -#define BIN_PER_LINE (64/4*3) -#define CHUNKS_PER_LINE (64/4) -#define CHAR_PER_LINE (64+1) - -static const unsigned char data_bin2ascii[65]="ABCDEFGHIJKLMNOPQRSTUVWXYZ\ -abcdefghijklmnopqrstuvwxyz0123456789+/"; - -/* 0xF0 is a EOLN - * 0xF1 is ignore but next needs to be 0xF0 (for \r\n processing). - * 0xF2 is EOF - * 0xE0 is ignore at start of line. - * 0xFF is error - */ - -#define B64_EOLN 0xF0 -#define B64_CR 0xF1 -#define B64_EOF 0xF2 -#define B64_WS 0xE0 -#define B64_ERROR 0xFF -#define B64_NOT_BASE64(a) (((a)|0x13) == 0xF3) - -static const unsigned char data_ascii2bin[128]={ - 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, - 0xFF,0xE0,0xF0,0xFF,0xFF,0xF1,0xFF,0xFF, - 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, - 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, - 0xE0,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, - 0xFF,0xFF,0xFF,0x3E,0xFF,0xF2,0xFF,0x3F, - 0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B, - 0x3C,0x3D,0xFF,0xFF,0xFF,0x00,0xFF,0xFF, - 0xFF,0x00,0x01,0x02,0x03,0x04,0x05,0x06, - 0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E, - 0x0F,0x10,0x11,0x12,0x13,0x14,0x15,0x16, - 0x17,0x18,0x19,0xFF,0xFF,0xFF,0xFF,0xFF, - 0xFF,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,0x20, - 0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28, - 0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x30, - 0x31,0x32,0x33,0xFF,0xFF,0xFF,0xFF,0xFF, - }; - -void EVP_EncodeInit(EVP_ENCODE_CTX *ctx) - { - ctx->length=48; - ctx->num=0; - ctx->line_num=0; - } - -void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl, - const unsigned char *in, int inl) - { - int i,j; - unsigned int total=0; - - *outl=0; - if (inl == 0) return; - OPENSSL_assert(ctx->length <= (int)sizeof(ctx->enc_data)); - if ((ctx->num+inl) < ctx->length) - { - memcpy(&(ctx->enc_data[ctx->num]),in,inl); - ctx->num+=inl; - return; - } - if (ctx->num != 0) - { - i=ctx->length-ctx->num; - memcpy(&(ctx->enc_data[ctx->num]),in,i); - in+=i; - inl-=i; - j=EVP_EncodeBlock(out,ctx->enc_data,ctx->length); - ctx->num=0; - out+=j; - *(out++)='\n'; - *out='\0'; - total=j+1; - } - while (inl >= ctx->length) - { - j=EVP_EncodeBlock(out,in,ctx->length); - in+=ctx->length; - inl-=ctx->length; - out+=j; - *(out++)='\n'; - *out='\0'; - total+=j+1; - } - if (inl != 0) - memcpy(&(ctx->enc_data[0]),in,inl); - ctx->num=inl; - *outl=total; - } - -void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl) - { - unsigned int ret=0; - - if (ctx->num != 0) - { - ret=EVP_EncodeBlock(out,ctx->enc_data,ctx->num); - out[ret++]='\n'; - out[ret]='\0'; - ctx->num=0; - } - *outl=ret; - } - -int EVP_EncodeBlock(unsigned char *t, const unsigned char *f, int dlen) - { - int i,ret=0; - unsigned long l; - - for (i=dlen; i > 0; i-=3) - { - if (i >= 3) - { - l= (((unsigned long)f[0])<<16L)| - (((unsigned long)f[1])<< 8L)|f[2]; - *(t++)=conv_bin2ascii(l>>18L); - *(t++)=conv_bin2ascii(l>>12L); - *(t++)=conv_bin2ascii(l>> 6L); - *(t++)=conv_bin2ascii(l ); - } - else - { - l=((unsigned long)f[0])<<16L; - if (i == 2) l|=((unsigned long)f[1]<<8L); - - *(t++)=conv_bin2ascii(l>>18L); - *(t++)=conv_bin2ascii(l>>12L); - *(t++)=(i == 1)?'=':conv_bin2ascii(l>> 6L); - *(t++)='='; - } - ret+=4; - f+=3; - } - - *t='\0'; - return(ret); - } - -void EVP_DecodeInit(EVP_ENCODE_CTX *ctx) - { - ctx->length=30; - ctx->num=0; - ctx->line_num=0; - ctx->expect_nl=0; - } - -/* -1 for error - * 0 for last line - * 1 for full line - */ -int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl, - const unsigned char *in, int inl) - { - int seof= -1,eof=0,rv= -1,ret=0,i,v,tmp,n,ln,exp_nl; - unsigned char *d; - - n=ctx->num; - d=ctx->enc_data; - ln=ctx->line_num; - exp_nl=ctx->expect_nl; - - /* last line of input. */ - if ((inl == 0) || ((n == 0) && (conv_ascii2bin(in[0]) == B64_EOF))) - { rv=0; goto end; } - - /* We parse the input data */ - for (i=0; i<inl; i++) - { - /* If the current line is > 80 characters, scream alot */ - if (ln >= 80) { rv= -1; goto end; } - - /* Get char and put it into the buffer */ - tmp= *(in++); - v=conv_ascii2bin(tmp); - /* only save the good data :-) */ - if (!B64_NOT_BASE64(v)) - { - OPENSSL_assert(n < (int)sizeof(ctx->enc_data)); - d[n++]=tmp; - ln++; - } - else if (v == B64_ERROR) - { - rv= -1; - goto end; - } - - /* have we seen a '=' which is 'definitly' the last - * input line. seof will point to the character that - * holds it. and eof will hold how many characters to - * chop off. */ - if (tmp == '=') - { - if (seof == -1) seof=n; - eof++; - } - - if (v == B64_CR) - { - ln = 0; - if (exp_nl) - continue; - } - - /* eoln */ - if (v == B64_EOLN) - { - ln=0; - if (exp_nl) - { - exp_nl=0; - continue; - } - } - exp_nl=0; - - /* If we are at the end of input and it looks like a - * line, process it. */ - if (((i+1) == inl) && (((n&3) == 0) || eof)) - { - v=B64_EOF; - /* In case things were given us in really small - records (so two '=' were given in separate - updates), eof may contain the incorrect number - of ending bytes to skip, so let's redo the count */ - eof = 0; - if (d[n-1] == '=') eof++; - if (d[n-2] == '=') eof++; - /* There will never be more than two '=' */ - } - - if ((v == B64_EOF && (n&3) == 0) || (n >= 64)) - { - /* This is needed to work correctly on 64 byte input - * lines. We process the line and then need to - * accept the '\n' */ - if ((v != B64_EOF) && (n >= 64)) exp_nl=1; - if (n > 0) - { - v=EVP_DecodeBlock(out,d,n); - n=0; - if (v < 0) { rv=0; goto end; } - ret+=(v-eof); - } - else - { - eof=1; - v=0; - } - - /* This is the case where we have had a short - * but valid input line */ - if ((v < ctx->length) && eof) - { - rv=0; - goto end; - } - else - ctx->length=v; - - if (seof >= 0) { rv=0; goto end; } - out+=v; - } - } - rv=1; -end: - *outl=ret; - ctx->num=n; - ctx->line_num=ln; - ctx->expect_nl=exp_nl; - return(rv); - } - -int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n) - { - int i,ret=0,a,b,c,d; - unsigned long l; - - /* trim white space from the start of the line. */ - while ((conv_ascii2bin(*f) == B64_WS) && (n > 0)) - { - f++; - n--; - } - - /* strip off stuff at the end of the line - * ascii2bin values B64_WS, B64_EOLN, B64_EOLN and B64_EOF */ - while ((n > 3) && (B64_NOT_BASE64(conv_ascii2bin(f[n-1])))) - n--; - - if (n%4 != 0) return(-1); - - for (i=0; i<n; i+=4) - { - a=conv_ascii2bin(*(f++)); - b=conv_ascii2bin(*(f++)); - c=conv_ascii2bin(*(f++)); - d=conv_ascii2bin(*(f++)); - if ( (a & 0x80) || (b & 0x80) || - (c & 0x80) || (d & 0x80)) - return(-1); - l=( (((unsigned long)a)<<18L)| - (((unsigned long)b)<<12L)| - (((unsigned long)c)<< 6L)| - (((unsigned long)d) )); - *(t++)=(unsigned char)(l>>16L)&0xff; - *(t++)=(unsigned char)(l>> 8L)&0xff; - *(t++)=(unsigned char)(l )&0xff; - ret+=3; - } - return(ret); - } - -int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl) - { - int i; - - *outl=0; - if (ctx->num != 0) - { - i=EVP_DecodeBlock(out,ctx->enc_data,ctx->num); - if (i < 0) return(-1); - ctx->num=0; - *outl=i; - return(1); - } - else - return(1); - } - -#ifdef undef -int EVP_DecodeValid(unsigned char *buf, int len) - { - int i,num=0,bad=0; - - if (len == 0) return(-1); - while (conv_ascii2bin(*buf) == B64_WS) - { - buf++; - len--; - if (len == 0) return(-1); - } - - for (i=len; i >= 4; i-=4) - { - if ( (conv_ascii2bin(buf[0]) >= 0x40) || - (conv_ascii2bin(buf[1]) >= 0x40) || - (conv_ascii2bin(buf[2]) >= 0x40) || - (conv_ascii2bin(buf[3]) >= 0x40)) - return(-1); - buf+=4; - num+=1+(buf[2] != '=')+(buf[3] != '='); - } - if ((i == 1) && (conv_ascii2bin(buf[0]) == B64_EOLN)) - return(num); - if ((i == 2) && (conv_ascii2bin(buf[0]) == B64_EOLN) && - (conv_ascii2bin(buf[0]) == B64_EOLN)) - return(num); - return(1); - } -#endif |