Walmart seller glossary
SECRET_ENCRYPTION_KEY
32-byte base64 env var ShelfSEO uses to envelope-encrypt third-party API secrets (Walmart Marketplace + Connect client secrets) at rest.
AES-256-GCM via Node crypto. Stored ciphertext format: v1:iv:tag:ciphertext (versioned so we can rotate later).
Generate via: openssl rand -base64 32. Set the result as the SECRET_ENCRYPTION_KEY env var in Vercel.
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Last reviewed May 13, 2026.
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