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pkg/cryptstate/ocb2: re-arrange var blocks inside Encrypt and Decrypt.

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This commit is contained in:
Mikkel Krautz 2012-12-02 12:44:15 +01:00
parent 389e2f844d
commit 3a63d96fe1
1 changed files with 14 additions and 10 deletions
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24
pkg/cryptstate/ocb2/ocb2.go
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@ -116,11 +116,13 @@ func Encrypt(cipher cipher.Block, dst []byte, src []byte, nonce []byte, tag []by
panic("ocb2: tag length is not equal to ocb2.TagSize") panic("ocb2: tag length is not equal to ocb2.TagSize")
} }
var delta [BlockSize]byte var (
var checksum [BlockSize]byte checksum [BlockSize]byte
var tmp [BlockSize]byte delta [BlockSize]byte
var pad [BlockSize]byte tmp [BlockSize]byte
off := 0 pad [BlockSize]byte
off int
)
cipher.Encrypt(delta[0:], nonce[0:]) cipher.Encrypt(delta[0:], nonce[0:])
zeros(checksum[0:]) zeros(checksum[0:])
@ -184,11 +186,13 @@ func Decrypt(cipher cipher.Block, plain []byte, encrypted []byte, nonce []byte,
panic("ocb2: tag length is not equal to ocb2.TagSize") panic("ocb2: tag length is not equal to ocb2.TagSize")
} }
var checksum [BlockSize]byte var (
var delta [BlockSize]byte checksum [BlockSize]byte
var tmp [BlockSize]byte delta [BlockSize]byte
var pad [BlockSize]byte tmp [BlockSize]byte
off := 0 pad [BlockSize]byte
off int
)
cipher.Encrypt(delta[0:], nonce[0:]) cipher.Encrypt(delta[0:], nonce[0:])
zeros(checksum[0:]) zeros(checksum[0:])