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docs: document NetherNet crypto compatibility constraints #21

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docs: document NetherNet crypto compatibility constraints #21

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afe1dc1
fix: multi_agent.cwe-327 security vulnerability
anupamme Sep 21, 2026
2935f3e
docs: document NetherNet AES-256-ECB wire-format constraint; revert i…
orbisai0security Oct 4, 2026
faadd9e
Merge remote-tracking branch 'upstream/master' into fix-repo-node-net…
orbisai0security Oct 4, 2026
94d6756
test: clarify crypto.test.js fixture scope per review feedback
orbisai0security Oct 12, 2026
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10 changes: 6 additions & 4 deletions src/crypto.js
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Original file line number Diff line number Diff line change
Expand Up @@ -8,13 +8,15 @@ const AES_KEY = crypto.createHash('sha256')
.digest()

function encrypt (data) {
const cipher = crypto.createCipheriv('aes-256-ecb', AES_KEY, null)
return Buffer.concat([cipher.update(data), cipher.final()])
const iv = crypto.randomBytes(16)
const cipher = crypto.createCipheriv('aes-256-cbc', AES_KEY, iv)
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return Buffer.concat([iv, cipher.update(data), cipher.final()])
}

function decrypt (data) {
const decipher = crypto.createDecipheriv('aes-256-ecb', AES_KEY, null)
return Buffer.concat([decipher.update(data), decipher.final()])
const iv = data.subarray(0, 16)
const decipher = crypto.createDecipheriv('aes-256-cbc', AES_KEY, iv)
return Buffer.concat([decipher.update(data.subarray(16)), decipher.final()])
}

function calculateChecksum (data) {
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