openssl
Generate secure random strings, passwords, and cryptographic tokens using OpenSSL. Use when creating passwords, API keys, secrets, or any secure random data.
Install
mkdir -p .claude/skills/openssl && curl -L -o skill.zip "https://mcp.directory/api/skills/download/8698" && unzip -o skill.zip -d .claude/skills/openssl && rm skill.zipInstalls to .claude/skills/openssl
About this skill
OpenSSL Secure Generation
Generate cryptographically secure random data using openssl rand.
Password/Secret Generation
# 32 random bytes as base64 (43 chars, URL-safe with tr)
openssl rand -base64 32 | tr '+/' '-_' | tr -d '='
# 24 random bytes as hex (48 chars)
openssl rand -hex 24
# alphanumeric password (32 chars)
openssl rand -base64 48 | tr -dc 'a-zA-Z0-9' | head -c 32
Common Lengths
| Use Case | Command |
|---|---|
| Password (strong) | openssl rand -base64 24 |
| API key | openssl rand -hex 32 |
| Session token | openssl rand -base64 48 |
| Short PIN (8 digits) | `openssl rand -hex 4 |
Notes
-base64outputs ~1.33x the byte count in characters-hexoutputs 2x the byte count in characters- Pipe through
tr -dcto filter character sets - Always use at least 16 bytes (128 bits) for secrets
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