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libssh/keyfiles.c: Fix bug when reading private keys with libgcrypt

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git-svn-id: svn+ssh://svn.berlios.de/svnroot/repos/libssh/trunk@73 7dcaeef0-15fb-0310-b436-a5af3365683c
This commit is contained in:
Jean-Philippe Garcia Ballester
2006-05-12 12:15:37 +00:00
parent 49f537bdbe
commit f10e8874b2
1 changed files with 3 additions and 2 deletions
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libssh/keyfiles.c
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@@ -134,15 +134,16 @@ int asn1_check_sequence(BUFFER *buffer)
unsigned char *j; unsigned char *j;
int i; int i;
u32 size; u32 size;
u32 padding;
if (!buffer_get_data(buffer,&tmp,1) || tmp != ASN1_SEQUENCE) if (!buffer_get_data(buffer,&tmp,1) || tmp != ASN1_SEQUENCE)
return 0; return 0;
size=asn1_get_len(buffer); size=asn1_get_len(buffer);
if (size != buffer_get_len(buffer) - buffer->pos) if ((padding = buffer_get_len(buffer) - buffer->pos - size) > 0)
for (i = buffer_get_len(buffer) - buffer->pos - size, for (i = buffer_get_len(buffer) - buffer->pos - size,
j = buffer_get(buffer) + size + buffer->pos; i; i--, j++) j = buffer_get(buffer) + size + buffer->pos; i; i--, j++)
{ {
if (*j != 1) /* padding is allowed */ if (*j != padding) /* padding is allowed */
return 0; /* but nothing else */ return 0; /* but nothing else */
} }
return 1; return 1;