Review rev_546587ceabec4501852706a937b7eb1b

{
  "summary": "Reviewed this ARM assembly routine implementing a constant-time halve-mod-p521 operation on a 9-limb field element. I checked for install-time hooks, network or credential access, dynamic loading, obfuscation, persistence, and other hidden payload behavior, and found no concrete malicious or supply-chain indicators in this file.\nReviewed this C header defining the internal DH structure, parameter checks, and RFC 7919 group accessors. I found no concrete malicious or supply-chain indicators in the target file: no install hooks, network or exfiltration logic, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess execution.\nReviewed `aws-lc/crypto/fipsmodule/ec/make_large_x_coordinate.go`, a small Go generator that enumerates elliptic-curve points and prints padded coordinates for P-224, P-256, P-384, and P-521. I checked for install hooks, network or exfiltration, credential access, hidden downloads, dynamic code loading, obfuscation, persistence, and other supply-chain compromise signals, and found no concrete indicators in this file.\nReviewed `aws-lc/crypto/decrepit/obj/obj_decrepit.c`, which is a small wrapper that forwards OBJ name enumeration to OpenSSL EVP cipher/MD iteration callbacks. I checked for install-time hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators in this file.\nReviewed a small Linux portability header that defines expected `getrandom` syscall numbers and fallback `GRND_NONBLOCK`/`GRND_RANDOM` constants for FIPS RNG code. I checked for install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence hooks, and found no concrete malicious or supply-chain indicators 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/arm/p521/bignum_half_p521.S",
      "hash": "blake3:8b91f8e2d10e6d1182d4d7fb20f78709a0aa124e79a85b3ac853dc5ef3ace987",
      "summary": "Reviewed this ARM assembly routine implementing a constant-time halve-mod-p521 operation on a 9-limb field element. I checked for install-time hooks, network or credential access, dynamic 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/crypto/fipsmodule/dh/internal.h",
      "hash": "blake3:e34c1aa7f5e9c3c90e2564e2d5cf61d8eab07c8deac8f15142ac849d3d443499",
      "summary": "Reviewed this C header defining the internal DH structure, parameter checks, and RFC 7919 group accessors. I found no concrete malicious or supply-chain indicators in the target file: no install hooks, network or exfiltration logic, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess execution.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/ec/make_large_x_coordinate.go",
      "hash": "blake3:6d4ca8aecb04b60d16f099cbca5b5d8ce04c5bd5cb3ad98949f025cdc1716e65",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/ec/make_large_x_coordinate.go`, a small Go generator that enumerates elliptic-curve points and prints padded coordinates for P-224, P-256, P-384, and P-521. I checked for install hooks, network or exfiltration, credential access, hidden downloads, dynamic code loading, obfuscation, persistence, and other supply-chain compromise signals, and found no concrete indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/decrepit/obj/obj_decrepit.c",
      "hash": "blake3:52beab32697bd18c9fcc188ddc9aec48c3072cccc172f1acfba5d2ee14c5a2d4",
      "summary": "Reviewed `aws-lc/crypto/decrepit/obj/obj_decrepit.c`, which is a small wrapper that forwards OBJ name enumeration to OpenSSL EVP cipher/MD iteration callbacks. I checked for install-time hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/rand/getrandom_fillin.h",
      "hash": "blake3:a0fc4c3e21f6e037ee1f9b36092479dfa3dd376668594f070524aeee1dfb8260",
      "summary": "Reviewed a small Linux portability header that defines expected `getrandom` syscall numbers and fallback `GRND_NONBLOCK`/`GRND_RANDOM` constants for FIPS RNG code. I checked for install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence hooks, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}