Review rev_137492f6df754654bbf41d0061c7cee6

{
  "summary": "Reviewed `aws-lc/util/fipstools/inject_hash/inject_hash.go`, a command-line utility that parses a single `.a` or `.o` input, extracts FIPS module boundaries from ELF/Mach-O objects, computes an HMAC-SHA256 over the module contents, and overwrites an uninitialized hash marker before writing the modified object back out. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess execution in this file.\nReviewed `aws-lc/crypto/fipsmodule/bcm.c`, which is a FIPS module bootstrap file that wires in many internal crypto sources, runs power-on self-tests, and performs an integrity HMAC over the module text/rodata. I did not find concrete malicious or supply-chain indicators in the target file: no install hooks, network or exfiltration paths, credential access, dynamic code loading from remote/encoded input, obfuscation, or persistence behavior.",
  "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/util/fipstools/inject_hash/inject_hash.go",
      "hash": "blake3:3432cf15be8963fa8567e4426a123336a70cc8046147f5175464e9ad8eb62faf",
      "summary": "Reviewed `aws-lc/util/fipstools/inject_hash/inject_hash.go`, a command-line utility that parses a single `.a` or `.o` input, extracts FIPS module boundaries from ELF/Mach-O objects, computes an HMAC-SHA256 over the module contents, and overwrites an uninitialized hash marker before writing the modified object back out. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess execution in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/bcm.c",
      "hash": "blake3:b360a15ec333e82fada34d4a36c3fc2e3465b6e382fead4c883f9917a6e65691",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/bcm.c`, which is a FIPS module bootstrap file that wires in many internal crypto sources, runs power-on self-tests, and performs an integrity HMAC over the module text/rodata. I did not find concrete malicious or supply-chain indicators in the target file: no install hooks, network or exfiltration paths, credential access, dynamic code loading from remote/encoded input, obfuscation, or persistence behavior.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}