Review rev_f4e0a8550405452d94951ab70f522790

{
  "summary": "Reviewed `aws-lc/crypto/bio/errno.c`, a small C helper that decides whether `BIO` operations should retry based on `errno` values like `EWOULDBLOCK`, `EINTR`, and `EAGAIN`. I found no concrete malicious or supply-chain indicators in this file: no install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess execution.\nReviewed `aws-lc/third_party/jitterentropy/jitterentropy-timer.h`, which only declares timer-related APIs and provides small inline stubs when `JENT_CONF_ENABLE_INTERNAL_TIMER` is unset. 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 file.\nReviewed `aws-lc/ssl/test/test_state.h`, a C++ test-support header that defines `TestState` plus serialization/deserialization and clock/session helpers for SSL test harnesses. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this file.\nReviewed `aws-lc/third_party/s2n-bignum/x86_att/p521/bignum_demont_p521.S`, a small x86-64 assembly routine that performs a fixed P-521 Montgomery-domain rotation/conversion and ABI shims for Windows vs. System V. I found no concrete indicators of install-time execution, network or exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in this file.\nReviewed `aws-lc/crypto/fipsmodule/modes/ofb.c`, a small AES OFB-mode implementation that performs in-place block/XOR processing with assertions and no apparent side effects. I checked for install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators.",
  "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/crypto/bio/errno.c",
      "hash": "blake3:b2447ca527abe6aaeb3b5df810e645ce9597b341da867b2adc4b67f6d23af3a5",
      "summary": "Reviewed `aws-lc/crypto/bio/errno.c`, a small C helper that decides whether `BIO` operations should retry based on `errno` values like `EWOULDBLOCK`, `EINTR`, and `EAGAIN`. I found no concrete malicious or supply-chain indicators in this file: no install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess execution.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/jitterentropy/jitterentropy-timer.h",
      "hash": "blake3:474aa4a35d4cc82d912cbe9ad45954decc4fe3dbedd4ac9cdf0f7e582026e167",
      "summary": "Reviewed `aws-lc/third_party/jitterentropy/jitterentropy-timer.h`, which only declares timer-related APIs and provides small inline stubs when `JENT_CONF_ENABLE_INTERNAL_TIMER` is unset. 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 file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/ssl/test/test_state.h",
      "hash": "blake3:ea86357a4ae8ab5768a990d224604b024215b608c8d54e126e1e13610a244951",
      "summary": "Reviewed `aws-lc/ssl/test/test_state.h`, a C++ test-support header that defines `TestState` plus serialization/deserialization and clock/session helpers for SSL test harnesses. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p521/bignum_demont_p521.S",
      "hash": "blake3:82aa8cf402b40b8fac9868907e3146776b2f42da207c089b3c0da4c941646410",
      "summary": "Reviewed `aws-lc/third_party/s2n-bignum/x86_att/p521/bignum_demont_p521.S`, a small x86-64 assembly routine that performs a fixed P-521 Montgomery-domain rotation/conversion and ABI shims for Windows vs. System V. I found no concrete indicators of install-time execution, network or exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/modes/ofb.c",
      "hash": "blake3:36f61a6d45477ade57beeae30d5399a7289a17a164cf320dcb23e5d7bb6cbdc9",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/modes/ofb.c`, a small AES OFB-mode implementation that performs in-place block/XOR processing with assertions and no apparent side effects. I checked for install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}