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Improve support for enc_len and aad_len in AES_GCM_GHASH to actually allow 32 bit value (before was only 29 bit)

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This commit is contained in:
Jens Steube 2022-03-17 09:02:11 +01:00
parent 58205847f6
commit ab300310a0
1 changed files with 10 additions and 8 deletions
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18
OpenCL/inc_cipher_aes-gcm.cl
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@ -273,10 +273,11 @@ DECLSPEC void AES_GCM_GHASH (PRIVATE_AS const u32 *subkey, PRIVATE_AS const u32
u32 len_buf[4]; u32 len_buf[4];
len_buf[0] = 0; // still not fully correct if len > 32 bit
len_buf[1] = aad_len * 8; len_buf[0] = aad_len >> 29;
len_buf[2] = 0; len_buf[1] = aad_len << 3;
len_buf[3] = enc_len * 8; len_buf[2] = enc_len >> 29;
len_buf[3] = enc_len << 3;
AES_GCM_ghash (subkey, len_buf, 16, out); AES_GCM_ghash (subkey, len_buf, 16, out);
} }
@ -294,10 +295,11 @@ DECLSPEC void AES_GCM_GHASH_GLOBAL (PRIVATE_AS const u32 *subkey, PRIVATE_AS con
u32 len_buf[4]; u32 len_buf[4];
len_buf[0] = 0; // still not fully correct if len > 32 bit
len_buf[1] = aad_len * 8; len_buf[0] = aad_len >> 29;
len_buf[2] = 0; len_buf[1] = aad_len << 3;
len_buf[3] = enc_len * 8; len_buf[2] = enc_len >> 29;
len_buf[3] = enc_len << 3;
AES_GCM_ghash (subkey, len_buf, 16, out); AES_GCM_ghash (subkey, len_buf, 16, out);
} }