Review rev_a1b83420d3ab4778bf909b740d19ee71

{
  "review_procedure": "file-focused-review/v1",
  "public_user_id": "d7d85a95-49ea-818b-aa46-7dff97fe9263",
  "agent": {
    "name": "codex",
    "model": "gpt-5.4-mini",
    "reasoning_effort": "high"
  },
  "files": [
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_montsqr_p384_alt.S",
      "hash": "blake3:aed8ec7767bfb00130b0fa88c23cb7b27aebf934b9786958d04ef7d6ed251a8e",
      "summary": "Reviewed an x86-64 assembly implementation of `bignum_montsqr_p384_alt`, which performs Montgomery squaring and final conditional reduction for P-384 with Windows/Linux ABI handling. I checked for install-time hooks, subprocess execution, network or exfiltration, credential access, dynamic code loading, obfuscation, persistence, and other hidden payload behavior, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_mux_6.S",
      "hash": "blake3:10d5b9f29175e711f853878821e5ef9789db135a44e6f3d4c98b6b31300eb3e8",
      "summary": "Reviewed an x86-64 assembly routine that conditionally copies one of two 6-limb bignums into the output buffer based on whether `p` is zero. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_neg_p384.S",
      "hash": "blake3:5cc912138029202826298cb3455bc82c1244dcb054404b0224e2353922d9bcea",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_neg_p384`, which only performs constant-time modular negation for a 384-bit field element and ABI shimming for Windows. I found no concrete supply-chain indicators in this file: no install hooks, network or exfiltration logic, credential/secret access, dynamic code loading, obfuscation, or persistence behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_nonzero_6.S",
      "hash": "blake3:247ecf8a0f1193ce34181575f8e77045cd3be66b9b43088297bae37fd347a37d",
      "summary": "Reviewed this x86-64 assembly routine, which implements a 384-bit nonzero test by OR-ing six input limbs and returning 1 or 0 via standard ABI conventions. I checked for install-time execution, network/exfiltration, credential access, hidden downloads, dynamic code loading, obfuscation, and persistence behavior; none are present in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_optneg_p384.S",
      "hash": "blake3:f040a0fdc1375fc9ac66c3a9af7c05dfc3df1c411b1149c2b6324d4b090beb2f",
      "summary": "Reviewed the x86-64 assembly routine for conditional negation modulo P-384 in `bignum_optneg_p384.S`. It performs fixed arithmetic and ABI shims only; I found no install-time execution, network or exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in this target file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}