Review rev_6a8e680810cb481094c0a5ad9dc77c12

{
  "summary": "Reviewed `aws-lc/crypto/fipsmodule/aes/mode_wrappers.c`, which contains AES mode wrapper functions that dispatch to hardware or software implementations and update the FIPS service indicator. I found no concrete malicious or supply-chain indicators in this file: there are no install hooks, network or exfiltration logic, credential access, dynamic code loading, obfuscation, or persistence behavior.\nReviewed `aws-lc/crypto/x509/v3_skey.c`, which implements subject-key-identifier X509 extension encoding/decoding from hex or from a public key hash. I checked for install hooks, network or exfiltration behavior, credential access, hidden downloads, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators in this file.\nReviewed `aws-lc/crypto/fipsmodule/ec/scalar.c`, which contains EC scalar conversion, comparison, reduction, Montgomery arithmetic, and inversion helpers for AWS-LC FIPS. I checked for install-time hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation/packing, and persistence behavior, and found no concrete malicious or supply-chain indicators in this file.\nReviewed this generated macOS x86 assembly trampoline used for ABI/test helpers. It only saves/restores registers, forwards arguments to a function pointer, and provides small register/flag clobber test stubs; I found no concrete indicators of install hooks, network or exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this target file.\nReviewed `aws-lc/crypto/fipsmodule/modes/xts.c`, which is a straight XTS mode AES implementation for encrypt/decrypt block processing. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence tampering, and other hidden execution paths; none were present in this file.",
  "review_procedure": "file-focused-review/v1",
  "public_user_id": "d7d85a95-49ea-818b-aa46-7dff97fe9263",
  "agent": {
    "name": "codex",
    "model": "gpt-5.4-mini",
    "reasoning_effort": "medium"
  },
  "files": [
    {
      "path": "aws-lc/crypto/fipsmodule/aes/mode_wrappers.c",
      "hash": "blake3:cbcd84a166a205a50f37fe46bc7c26d18e582499af65865a0aa271d22532ece9",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/aes/mode_wrappers.c`, which contains AES mode wrapper functions that dispatch to hardware or software implementations and update the FIPS service indicator. I found no concrete malicious or supply-chain indicators in this file: there are no install hooks, network or exfiltration logic, credential access, dynamic code loading, obfuscation, or persistence behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/x509/v3_skey.c",
      "hash": "blake3:f757465abed551f4f01256536ea85c16cb4cf005e032b6297dd638b17c7c5577",
      "summary": "Reviewed `aws-lc/crypto/x509/v3_skey.c`, which implements subject-key-identifier X509 extension encoding/decoding from hex or from a public key hash. I checked for install hooks, network or exfiltration behavior, credential access, hidden downloads, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/ec/scalar.c",
      "hash": "blake3:c0e17a9aba1c28660f34a4c1c5bcf4d7ef5e74d965a1b31b01c5cf93b4d08d16",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/ec/scalar.c`, which contains EC scalar conversion, comparison, reduction, Montgomery arithmetic, and inversion helpers for AWS-LC FIPS. I checked for install-time hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation/packing, and persistence behavior, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/generated-src/mac-x86/crypto/test/trampoline-x86.S",
      "hash": "blake3:bbb5a3cdc2ae611e0b452d0013ab74abd4035cc6e25581cdcbf70c2d4c2e56b9",
      "summary": "Reviewed this generated macOS x86 assembly trampoline used for ABI/test helpers. It only saves/restores registers, forwards arguments to a function pointer, and provides small register/flag clobber test stubs; I found no concrete indicators of install hooks, network or exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/modes/xts.c",
      "hash": "blake3:0b5001e580918fff978ac8a60d1fbf8501340c01997746694a99bf20ef738133",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/modes/xts.c`, which is a straight XTS mode AES implementation for encrypt/decrypt block processing. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence tampering, and other hidden execution paths; none were present in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}