Review rev_69cc21a7732d4eda827c966cf671a99b

{
  "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/p521/bignum_montmul_p521_alt.S",
      "hash": "blake3:7d29d17ac323d7fb635c3400af6d69b59b7c16d28e34cbd03e11c5e590a428c6",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_montmul_p521_alt`, which performs fixed-function Montgomery-style multiplication and reduction for P-521 using only register/stack arithmetic. I found no concrete indicators of install-time execution, network or exfiltration, 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/p521/bignum_montsqr_p521.S",
      "hash": "blake3:4d98d1293e2c5f331970e2b480ce6a0281f224ea2363481978e37ec66bdc5604",
      "summary": "This file is a hand-written x86-64 assembly implementation of `bignum_montsqr_p521`, performing Montgomery squaring and final reduction for the P-521 field. I reviewed it for install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, and persistence, 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/p521/bignum_montsqr_p521_alt.S",
      "hash": "blake3:a490b71cca0d9a1eb6c03f604ac2efbbacbc2f6bf4a0abd3cf3f3fb5348afb19",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_montsqr_p521_alt`, which is a straight-line Montgomery squaring routine for P-521 using register arithmetic and stack scratch space. I found no concrete indicators of install-time execution, subprocess launches, network or exfiltration behavior, credential/secret access, dynamic code loading, obfuscation, or persistence in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}