Review rev_9e80caef827f4a6ba76781f7bc7c1b24

{
  "summary": "Reviewed `aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_half_p384.S`, which is a straight-line x86-64 routine that halves a 384-bit field element modulo `p_384` using register arithmetic and ABI shims. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise in this target file.\nReviewed the x86-64 assembly in `aws-lc/third_party/s2n-bignum/x86_att/p521/bignum_half_p521.S`; it implements a straight-line 9-limb modular halving/bit-rotation routine for `p_521` with only register/memory moves and shifts. I found no concrete indicators of install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or other hidden payload execution.\nReviewed `aws-lc/include/openssl/ripemd.h`, which is a public C header declaring the RIPEMD-160 context and export prototypes. It contains only type/constant declarations and function signatures; I checked for install hooks, network or exfiltration logic, credential access, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators.\nReviewed `aws-lc/third_party/s2n-bignum/x86_att/p521/bignum_neg_p521.S`, which is a small x86-64 assembly routine for modular negation over p521 with Windows/Linux ABI handling only. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence in this target file.\nReviewed `aws-lc/util/fipstools/acvp/modulewrapper/main.cc`, which is a small ACVP module wrapper that prints version/debugger info, then reads requests from stdin, dispatches handlers, and writes replies to stdout. I found no concrete indicators of install hooks, network/exfiltration, 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/x86_att/p384/bignum_half_p384.S",
      "hash": "blake3:55fcb1be3304ad8bc9b10d35c012c65e37dd5b28355c27f9c9874eda0bca3e70",
      "summary": "Reviewed `aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_half_p384.S`, which is a straight-line x86-64 routine that halves a 384-bit field element modulo `p_384` using register arithmetic and ABI shims. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p521/bignum_half_p521.S",
      "hash": "blake3:dacaee10f03ccb0b5d9af2e067fc0c12cdb12c3ef70de9f187cf38c28c73884c",
      "summary": "Reviewed the x86-64 assembly in `aws-lc/third_party/s2n-bignum/x86_att/p521/bignum_half_p521.S`; it implements a straight-line 9-limb modular halving/bit-rotation routine for `p_521` with only register/memory moves and shifts. I found no concrete indicators of install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or other hidden payload execution.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/include/openssl/ripemd.h",
      "hash": "blake3:7116c430d87c729948551a80360c39121b81c68495f883c664629f902c8f5a80",
      "summary": "Reviewed `aws-lc/include/openssl/ripemd.h`, which is a public C header declaring the RIPEMD-160 context and export prototypes. It contains only type/constant declarations and function signatures; I checked for install hooks, network or exfiltration logic, 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/x86_att/p521/bignum_neg_p521.S",
      "hash": "blake3:14e77ff489f6831ac1c66ec360b2417926ddb5e1170d6fcc0c9feace6449880f",
      "summary": "Reviewed `aws-lc/third_party/s2n-bignum/x86_att/p521/bignum_neg_p521.S`, which is a small x86-64 assembly routine for modular negation over p521 with Windows/Linux ABI handling only. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/util/fipstools/acvp/modulewrapper/main.cc",
      "hash": "blake3:bc2bddeefe78da9925863e6a0e6e1c5d88f800d3c448b04823718c7b629aa435",
      "summary": "Reviewed `aws-lc/util/fipstools/acvp/modulewrapper/main.cc`, which is a small ACVP module wrapper that prints version/debugger info, then reads requests from stdin, dispatches handlers, and writes replies to stdout. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}