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| author | Niels Möller <nisse@lysator.liu.se> | 2004-01-08 13:37:13 +0100 |
|---|---|---|
| committer | Niels Möller <nisse@lysator.liu.se> | 2004-01-08 13:37:13 +0100 |
| commit | 21ee1904b5c46f314b862eea33d3b86fcf6c7c88 (patch) | |
| tree | 87460c8b18c74f6b20f94bac8e3cc1b378a6215f /pkcs1-rsa-md5.c | |
| parent | dcd5b982b7323a3834bbf43019dd8b30df7e71e4 (diff) | |
| download | nettle-21ee1904b5c46f314b862eea33d3b86fcf6c7c88.tar.gz | |
(TMP_DECL, TMP_ALLOC): New macros. When alloca is unavailable, they
work by allocating a fix amount of stack and imposing a hard limit on
what can be allocated. Updated all users of alloca.
Rev: src/nettle/bignum-random.c:1.4
Rev: src/nettle/cbc.c:1.8
Rev: src/nettle/dsa-keygen.c:1.7
Rev: src/nettle/hmac.c:1.6
Rev: src/nettle/pkcs1-rsa-md5.c:1.3
Rev: src/nettle/pkcs1-rsa-sha1.c:1.3
Rev: src/nettle/rsa-decrypt.c:1.5
Rev: src/nettle/rsa-encrypt.c:1.8
Rev: src/nettle/sexp.c:1.15
Diffstat (limited to 'pkcs1-rsa-md5.c')
| -rw-r--r-- | pkcs1-rsa-md5.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/pkcs1-rsa-md5.c b/pkcs1-rsa-md5.c index c337232d..d3ccd8b0 100644 --- a/pkcs1-rsa-md5.c +++ b/pkcs1-rsa-md5.c @@ -38,6 +38,8 @@ #include "bignum.h" #include "pkcs1.h" +#include "nettle-internal.h" + /* From pkcs-1v2 * * md5 OBJECT IDENTIFIER ::= @@ -64,7 +66,8 @@ md5_prefix[] = void pkcs1_rsa_md5_encode(mpz_t m, unsigned length, struct md5_ctx *hash) { - uint8_t *em = alloca(length); + TMP_DECL(em, uint8_t, NETTLE_MAX_BIGNUM_BITS / 8); + TMP_ALLOC(em, length); assert(length >= MD5_DIGEST_SIZE); pkcs1_signature_prefix(length - MD5_DIGEST_SIZE, em, @@ -78,7 +81,8 @@ pkcs1_rsa_md5_encode(mpz_t m, unsigned length, struct md5_ctx *hash) void pkcs1_rsa_md5_encode_digest(mpz_t m, unsigned length, const uint8_t *digest) { - uint8_t *em = alloca(length); + TMP_DECL(em, uint8_t, NETTLE_MAX_BIGNUM_BITS / 8); + TMP_ALLOC(em, length); assert(length >= MD5_DIGEST_SIZE); pkcs1_signature_prefix(length - MD5_DIGEST_SIZE, em, |