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Differential D42838

ossl: Fix some bugs in the fallback AES-GCM implementation
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Authored by markj on Nov 29 2023, 8:15 PM.
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jhb
Commits
rG433fe061fc59: ossl: Fix some bugs in the fallback AES-GCM implementation
rG118b866d9c39: ossl: Fix some bugs in the fallback AES-GCM implementation
rG47d767dab548: ossl: Fix some bugs in the fallback AES-GCM implementation
Summary

gcm_*_aesni() are used when the AVX512 implementation is not available.
Fix two bugs which manifest when handling operations spanning multiple
segments:

  • Avoid underflow when the length of the input is smaller than the residual.
  • In gcm_decrypt_aesni(), ensure that we begin the operation at the right offset into the input and output buffers.

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rG FreeBSD src repository
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sys/
crypto/
openssl/
amd64/
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sys/crypto/openssl/amd64/ossl_aes_gcm.c

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