Review rev_66472bb2a9624d3cbbee96371c03a97a

{
  "summary": "Reviewed the x86-64 assembly routine for P-521 modular doubling and its ABI shim. It only performs fixed arithmetic and conditional reduction on in-memory inputs; I found no install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in this file.\nThis file is a small x86-64 assembly routine that conditionally negates a 256-bit value modulo secp256k1, with ABI handling for Windows and an ELF stack note. I found no concrete indicators of install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence.\nReviewed `aws-lc/crypto/asn1/a_gentm.c`, which implements ASN.1 GeneralizedTime parsing, validation, and formatting helpers. I found no concrete malicious or supply-chain indicators in this file: there are no install hooks, network/exfiltration paths, credential access, dynamic code loading, obfuscation, or persistence behavior.\nReviewed `aws-lc/crypto/decrepit/evp/evp_do_all.c`, which only defines EVP cipher and digest enumeration helpers that invoke a caller-supplied callback over a fixed list of algorithms. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise behavior in this file.\nReviewed `aws-lc/crypto/fipsmodule/bn/jacobi.c`, which implements the Jacobi symbol over `BIGNUM`s using local arithmetic and BN_CTX temporaries. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence 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/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p521/bignum_double_p521.S",
      "hash": "blake3:21522191288b7515086ce1cc69308c0680048525e46e1de24f01a8fd85df64e3",
      "summary": "Reviewed the x86-64 assembly routine for P-521 modular doubling and its ABI shim. It only performs fixed arithmetic and conditional reduction on in-memory inputs; I found no install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/secp256k1/bignum_optneg_p256k1.S",
      "hash": "blake3:249c6544d76c201f57dab90ac30d0ad1bfb5fde87ee0db0f9d3276ace3141478",
      "summary": "This file is a small x86-64 assembly routine that conditionally negates a 256-bit value modulo secp256k1, with ABI handling for Windows and an ELF stack note. I found no concrete indicators of install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/asn1/a_gentm.c",
      "hash": "blake3:bd68f4aaa6da4475cc8c928528012dcfe3569ce2737a5c570f2b4764577ce8fe",
      "summary": "Reviewed `aws-lc/crypto/asn1/a_gentm.c`, which implements ASN.1 GeneralizedTime parsing, validation, and formatting helpers. I found no concrete malicious or supply-chain indicators in this file: there are no install hooks, network/exfiltration paths, credential access, dynamic code loading, obfuscation, or persistence behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/decrepit/evp/evp_do_all.c",
      "hash": "blake3:76fc36ce0c53488f11cf02bc25da2067336f7a864804c3d558722b2ba077bbf2",
      "summary": "Reviewed `aws-lc/crypto/decrepit/evp/evp_do_all.c`, which only defines EVP cipher and digest enumeration helpers that invoke a caller-supplied callback over a fixed list of algorithms. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise behavior in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/bn/jacobi.c",
      "hash": "blake3:777e7e1b79171fd052ba74c988148de69d300cb4a38c988107a4a271b12b345c",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/bn/jacobi.c`, which implements the Jacobi symbol over `BIGNUM`s using local arithmetic and BN_CTX temporaries. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}