-openssl-us...@openssl.org] On
Behalf Of Dr. Stephen Henson [st...@openssl.org]
Sent: Friday, May 18, 2012 10:17 AM
To: openssl-users@openssl.org
Subject: Re: AES-GCM Gives Wrong Tag Value?
On Fri, May 18, 2012, Li, David wrote:
Hi Experts,
First time I am using AES-GCM mode to run the NIST test
Hi Experts,
First time I am using AES-GCM mode to run the NIST test vectors. The API is:
void AES_gcm128_encrypt(GCM128_CONTEXT *ctx,
const unsigned char *in, unsigned char *out,
size_t len)
After initialization and encryption, my cipher text matched the one
David:
This is just a quick and dirty superficial guess, but are you copying from
the correct place in memory? I.e., is the value of: ctx.Xi.c, a pointer to
the address that holds the first byte of the tag? If you do a byte-wise
dump of the entire structure and then do visual pattern matching for
On Fri, May 18, 2012, Li, David wrote:
Hi Experts,
First time I am using AES-GCM mode to run the NIST test vectors. The API is:
void AES_gcm128_encrypt(GCM128_CONTEXT *ctx,
const unsigned char *in, unsigned char *out,
size_t len)
After initialization
