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tpm2: Reset the internal CMAC state when starting a CMAC

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Initialize the internal CMAC state to 0s when starting a CMAC.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
This commit is contained in:
Stefan Berger 2019-05-09 21:42:59 -04:00 committed by Stefan Berger
parent a829ddbdeb
commit 137b9da5c8
1 changed files with 1 additions and 0 deletions
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src/tpm2/crypto/openssl/CryptCmac.c
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@ -87,6 +87,7 @@ CryptCmacStart(
//
if(macAlg != TPM_ALG_CMAC)
return 0;
MemorySet(cState, 0, sizeof(*cState));
// set up the encryption algorithm and parameters
cState->symAlg = def->algorithm;
cState->keySizeBits = def->keyBits.sym;