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Diffstat (limited to 'deps/openssl/openssl/crypto/evp/encode.c')
-rw-r--r--deps/openssl/openssl/crypto/evp/encode.c168
1 files changed, 121 insertions, 47 deletions
diff --git a/deps/openssl/openssl/crypto/evp/encode.c b/deps/openssl/openssl/crypto/evp/encode.c
index abb1044378..da32d4fd19 100644
--- a/deps/openssl/openssl/crypto/evp/encode.c
+++ b/deps/openssl/openssl/crypto/evp/encode.c
@@ -1,5 +1,5 @@
/*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@@ -12,10 +12,17 @@
#include "internal/cryptlib.h"
#include <openssl/evp.h>
#include "evp_locl.h"
+#include "internal/evp_int.h"
+
+static unsigned char conv_ascii2bin(unsigned char a,
+ const unsigned char *table);
+static int evp_encodeblock_int(EVP_ENCODE_CTX *ctx, unsigned char *t,
+ const unsigned char *f, int dlen);
+static int evp_decodeblock_int(EVP_ENCODE_CTX *ctx, unsigned char *t,
+ const unsigned char *f, int n);
-static unsigned char conv_ascii2bin(unsigned char a);
#ifndef CHARSET_EBCDIC
-# define conv_bin2ascii(a) (data_bin2ascii[(a)&0x3f])
+# define conv_bin2ascii(a, table) ((table)[(a)&0x3f])
#else
/*
* We assume that PEM encoded files are EBCDIC files (i.e., printable text
@@ -23,7 +30,7 @@ static unsigned char conv_ascii2bin(unsigned char a);
* (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_bin2ascii(a, table) ((table)[(a)&0x3f])
#endif
/*-
@@ -38,8 +45,13 @@ static unsigned char conv_ascii2bin(unsigned char a);
#define CHUNKS_PER_LINE (64/4)
#define CHAR_PER_LINE (64+1)
-static const unsigned char data_bin2ascii[65] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ\
-abcdefghijklmnopqrstuvwxyz0123456789+/";
+static const unsigned char data_bin2ascii[65] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+/* SRP uses a different base64 alphabet */
+static const unsigned char srpdata_bin2ascii[65] =
+ "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz./";
+
/*-
* 0xF0 is a EOLN
@@ -76,20 +88,39 @@ static const unsigned char data_ascii2bin[128] = {
0x31, 0x32, 0x33, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
};
+static const unsigned char srpdata_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, 0xFF, 0xFF, 0xF2, 0x3E, 0x3F,
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0xFF,
+ 0xFF, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10,
+ 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
+ 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,
+ 0x21, 0x22, 0x23, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A,
+ 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32,
+ 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A,
+ 0x3B, 0x3C, 0x3D, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+};
+
#ifndef CHARSET_EBCDIC
-static unsigned char conv_ascii2bin(unsigned char a)
+static unsigned char conv_ascii2bin(unsigned char a, const unsigned char *table)
{
if (a & 0x80)
return B64_ERROR;
- return data_ascii2bin[a];
+ return table[a];
}
#else
-static unsigned char conv_ascii2bin(unsigned char a)
+static unsigned char conv_ascii2bin(unsigned char a, const unsigned char *table)
{
a = os_toascii[a];
if (a & 0x80)
return B64_ERROR;
- return data_ascii2bin[a];
+ return table[a];
}
#endif
@@ -115,11 +146,17 @@ int EVP_ENCODE_CTX_num(EVP_ENCODE_CTX *ctx)
return ctx->num;
}
+void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags)
+{
+ ctx->flags = flags;
+}
+
void EVP_EncodeInit(EVP_ENCODE_CTX *ctx)
{
ctx->length = 48;
ctx->num = 0;
ctx->line_num = 0;
+ ctx->flags = 0;
}
int EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
@@ -142,21 +179,27 @@ int EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
memcpy(&(ctx->enc_data[ctx->num]), in, i);
in += i;
inl -= i;
- j = EVP_EncodeBlock(out, ctx->enc_data, ctx->length);
+ j = evp_encodeblock_int(ctx, out, ctx->enc_data, ctx->length);
ctx->num = 0;
out += j;
- *(out++) = '\n';
+ total = j;
+ if ((ctx->flags & EVP_ENCODE_CTX_NO_NEWLINES) == 0) {
+ *(out++) = '\n';
+ total++;
+ }
*out = '\0';
- total = j + 1;
}
while (inl >= ctx->length && total <= INT_MAX) {
- j = EVP_EncodeBlock(out, in, ctx->length);
+ j = evp_encodeblock_int(ctx, out, in, ctx->length);
in += ctx->length;
inl -= ctx->length;
out += j;
- *(out++) = '\n';
+ total += j;
+ if ((ctx->flags & EVP_ENCODE_CTX_NO_NEWLINES) == 0) {
+ *(out++) = '\n';
+ total++;
+ }
*out = '\0';
- total += j + 1;
}
if (total > INT_MAX) {
/* Too much output data! */
@@ -176,35 +219,43 @@ 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';
+ ret = evp_encodeblock_int(ctx, out, ctx->enc_data, ctx->num);
+ if ((ctx->flags & EVP_ENCODE_CTX_NO_NEWLINES) == 0)
+ out[ret++] = '\n';
out[ret] = '\0';
ctx->num = 0;
}
*outl = ret;
}
-int EVP_EncodeBlock(unsigned char *t, const unsigned char *f, int dlen)
+static int evp_encodeblock_int(EVP_ENCODE_CTX *ctx, unsigned char *t,
+ const unsigned char *f, int dlen)
{
int i, ret = 0;
unsigned long l;
+ const unsigned char *table;
+
+ if (ctx != NULL && (ctx->flags & EVP_ENCODE_CTX_USE_SRP_ALPHABET) != 0)
+ table = srpdata_bin2ascii;
+ else
+ table = data_bin2ascii;
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);
+ *(t++) = conv_bin2ascii(l >> 18L, table);
+ *(t++) = conv_bin2ascii(l >> 12L, table);
+ *(t++) = conv_bin2ascii(l >> 6L, table);
+ *(t++) = conv_bin2ascii(l, table);
} 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++) = conv_bin2ascii(l >> 18L, table);
+ *(t++) = conv_bin2ascii(l >> 12L, table);
+ *(t++) = (i == 1) ? '=' : conv_bin2ascii(l >> 6L, table);
*(t++) = '=';
}
ret += 4;
@@ -212,16 +263,21 @@ int EVP_EncodeBlock(unsigned char *t, const unsigned char *f, int dlen)
}
*t = '\0';
- return (ret);
+ return ret;
+}
+
+int EVP_EncodeBlock(unsigned char *t, const unsigned char *f, int dlen)
+{
+ return evp_encodeblock_int(NULL, t, f, dlen);
}
void EVP_DecodeInit(EVP_ENCODE_CTX *ctx)
{
- /* Only ctx->num is used during decoding. */
+ /* Only ctx->num and ctx->flags are used during decoding. */
ctx->num = 0;
ctx->length = 0;
ctx->line_num = 0;
- ctx->expect_nl = 0;
+ ctx->flags = 0;
}
/*-
@@ -249,6 +305,7 @@ int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
{
int seof = 0, eof = 0, rv = -1, ret = 0, i, v, tmp, n, decoded_len;
unsigned char *d;
+ const unsigned char *table;
n = ctx->num;
d = ctx->enc_data;
@@ -265,9 +322,14 @@ int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
goto end;
}
+ if ((ctx->flags & EVP_ENCODE_CTX_USE_SRP_ALPHABET) != 0)
+ table = srpdata_ascii2bin;
+ else
+ table = data_ascii2bin;
+
for (i = 0; i < inl; i++) {
tmp = *(in++);
- v = conv_ascii2bin(tmp);
+ v = conv_ascii2bin(tmp, table);
if (v == B64_ERROR) {
rv = -1;
goto end;
@@ -307,7 +369,7 @@ int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
}
if (n == 64) {
- decoded_len = EVP_DecodeBlock(out, d, n);
+ decoded_len = evp_decodeblock_int(ctx, out, d, n);
n = 0;
if (decoded_len < 0 || eof > decoded_len) {
rv = -1;
@@ -326,7 +388,7 @@ int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
tail:
if (n > 0) {
if ((n & 3) == 0) {
- decoded_len = EVP_DecodeBlock(out, d, n);
+ decoded_len = evp_decodeblock_int(ctx, out, d, n);
n = 0;
if (decoded_len < 0 || eof > decoded_len) {
rv = -1;
@@ -345,16 +407,23 @@ end:
/* Legacy behaviour. This should probably rather be zeroed on error. */
*outl = ret;
ctx->num = n;
- return (rv);
+ return rv;
}
-int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n)
+static int evp_decodeblock_int(EVP_ENCODE_CTX *ctx, unsigned char *t,
+ const unsigned char *f, int n)
{
int i, ret = 0, a, b, c, d;
unsigned long l;
+ const unsigned char *table;
+
+ if (ctx != NULL && (ctx->flags & EVP_ENCODE_CTX_USE_SRP_ALPHABET) != 0)
+ table = srpdata_ascii2bin;
+ else
+ table = data_ascii2bin;
/* trim white space from the start of the line. */
- while ((conv_ascii2bin(*f) == B64_WS) && (n > 0)) {
+ while ((conv_ascii2bin(*f, table) == B64_WS) && (n > 0)) {
f++;
n--;
}
@@ -363,19 +432,19 @@ int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int 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]))))
+ while ((n > 3) && (B64_NOT_BASE64(conv_ascii2bin(f[n - 1], table))))
n--;
if (n % 4 != 0)
- return (-1);
+ 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++));
+ a = conv_ascii2bin(*(f++), table);
+ b = conv_ascii2bin(*(f++), table);
+ c = conv_ascii2bin(*(f++), table);
+ d = conv_ascii2bin(*(f++), table);
if ((a & 0x80) || (b & 0x80) || (c & 0x80) || (d & 0x80))
- return (-1);
+ return -1;
l = ((((unsigned long)a) << 18L) |
(((unsigned long)b) << 12L) |
(((unsigned long)c) << 6L) | (((unsigned long)d)));
@@ -384,7 +453,12 @@ int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n)
*(t++) = (unsigned char)(l) & 0xff;
ret += 3;
}
- return (ret);
+ return ret;
+}
+
+int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n)
+{
+ return evp_decodeblock_int(NULL, t, f, n);
}
int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl)
@@ -393,12 +467,12 @@ int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl)
*outl = 0;
if (ctx->num != 0) {
- i = EVP_DecodeBlock(out, ctx->enc_data, ctx->num);
+ i = evp_decodeblock_int(ctx, out, ctx->enc_data, ctx->num);
if (i < 0)
- return (-1);
+ return -1;
ctx->num = 0;
*outl = i;
- return (1);
+ return 1;
} else
- return (1);
+ return 1;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-12 17:46:55 +0000