Review rev_9aed57f4e08844c8b1cb93914eba1c2d

{
  "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/s2n-bignum-imported/x86_att/p384/bignum_sub_p384.S",
      "hash": "blake3:fa79d55f6ffa3e9d76433c57dbaf19ff7f298713f50c18dec193607618c9c52a",
      "summary": "This target is a handwritten x86-64 assembly routine that performs modular subtraction for the P-384 field and writes the result back to the output buffer. I checked the file for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence tampering, and other payload-construction patterns, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p384/bignum_tomont_p384.S",
      "hash": "blake3:46feca48783cbc1612427b69bd21560d9c51785c01a6858b6cc8d68c3fc9d30e",
      "summary": "This file is hand-written x86-64 assembly for `bignum_tomont_p384`, implementing P-384 Montgomery conversion/reduction and a final conditional subtraction. I checked it for install-time hooks, subprocess or syscall use, network/exfiltration, credential access, dynamic code loading, obfuscation, and persistence behavior, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p384/bignum_tomont_p384_alt.S",
      "hash": "blake3:6453f0a42a660bafc930eeb9795d1c272f325a154c598ab92496f9b3f2688cc3",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_tomont_p384_alt`, which performs Montgomery-form conversion for the P-384 field using fixed constants and register-only arithmetic. I checked for install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and other supply-chain indicators, and found none.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p384/bignum_triple_p384.S",
      "hash": "blake3:9e2ad31963700234897fd3391089d596e8bf0c90774863df503fb535eb3f8d22",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_triple_p384`, which performs a constant-time modular triple for P-384 under SysV and Windows x64 ABIs using only arithmetic, masking, and register save/restore. I found no concrete indicators of install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p384/bignum_triple_p384_alt.S",
      "hash": "blake3:3f49f80f2202473ac0afe3c2bd4272b3b75d1f944b2f0268846eb668b0249386",
      "summary": "Reviewed this x86-64 assembly routine for P-384 modular tripling. It appears to be a straight arithmetic implementation with register-saving prologue/epilogue and constant-time reduction logic; I found no install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in the target file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}