# signify

> OpenBSD utility

**Wikidata**: [Q126326772](https://www.wikidata.org/wiki/Q126326772)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Signify_(OpenBSD))  
**Source**: https://4ort.xyz/entity/signify

## Summary
Signify is a security-focused utility in the OpenBSD operating system designed to create and verify digital signatures. It emphasizes simplicity and auditability, serving as a lightweight alternative to tools like OpenSSL. First released in 2014, it is developed by Ted Unangst and Marc Espié as part of OpenBSD's secure software ecosystem.

## Key Facts
- **Inception**: 2014 (software release).
- **Developers**: Ted Unangst and Marc Espié.
- **Operating System**: Exclusively part of OpenBSD.
- **Primary Use**: Digital signatures using public-key cryptography (Ed25519 algorithm).
- **Code Repository**: Hosted on OpenBSD's CVSWeb at [https://cvsweb.openbsd.org/src/usr.bin/signify/](https://cvsweb.openbsd.org/src/usr.bin/signify/).
- **Design Philosophy**: Prioritizes security and auditability over speed or complexity.
- **Documentation**: Official manual page at [https://man.openbsd.org/signify](https://man.openbsd.org/signify).

## FAQs
### Q: What is the main purpose of signify?
A: Signify generates and verifies digital signatures to ensure the authenticity and integrity of data, using the Ed25519 public-key algorithm.

### Q: Who developed signify?
A: The utility was created by Ted Unangst and Marc Espié as part of the OpenBSD project.

### Q: How does signify differ from tools like OpenSSL?
A: Unlike OpenSSL, signify focuses narrowly on digital signatures, avoiding unnecessary complexity and reducing potential attack surfaces.

## Why It Matters
Signify plays a critical role in OpenBSD's security-centric ecosystem by providing a minimal, auditable tool for digital signatures. It addresses the need for a secure alternative to bloated cryptographic software, aligning with OpenBSD's philosophy of "correctness by inspection." By implementing the modern Ed25519 algorithm and stripping away non-essential functions, signify minimizes vulnerabilities while ensuring reliable authentication. Its integration into OpenBSD reinforces the operating system's reputation for prioritizing security, making it a trusted component for developers and administrators handling sensitive data.

## Notable For
- **Ed25519 Implementation**: Uses the high-security Ed25519 public-key signature system.
- **Minimalist Design**: Avoids feature bloat to reduce attack surfaces.
- **OpenBSD Integration**: Developed and maintained exclusively within the OpenBSD project.
- **Auditability**: Prioritizes code simplicity for easier security reviews.

## Body
### Development
- **Initial Release**: 2014 as part of OpenBSD's software suite.
- **Lead Developers**: Ted Unangst and Marc Espié, long-time OpenBSD contributors.
- **Repository**: Source code maintained in OpenBSD's CVS repository.

### Technical Details
- **Algorithm**: Employs the Ed25519 digital signature scheme.
- **Key Features**:
  - Generates key pairs for signing and verification.
  - Supports signed releases and file integrity checks.
  - Integrates with OpenBSD's secure software distribution process.

### Security Focus
- **Design Goals**: Emphasizes simplicity, auditability, and cryptographic best practices.
- **Use Case**: Securing OpenBSD software releases and verifying authenticity in critical infrastructure.

## References

1. [Source](https://man.openbsd.org/signify)