Qpher
Post-quantum encryption & signing — drop-in REST APIs
Qpher launched on June 9, 2026 with 4 votes, #3,322 of 22,647 launches that month and more than 75% of that year's launches.
What it does
Post-quantum cryptography as drop-in REST APIs. ML-KEM-768 (formerly Kyber) for encryption and ML-DSA-65 (formerly Dilithium) for signatures — both NIST-standardized in August 2024 (FIPS 203 & 204). Private keys never leave secure enclaves. SDKs for Python, Node.js, Go. MCP server for AI agents. Built by an engineer who spent 12 years on U.S. federal systems (VA, DHS, USCIS, DFC) — making the migration practical for everyone else. Start free.
Post-quantum cryptography as simple REST APIs. Kyber768 encryption and Dilithium3 digital signatures with non-exportable key management. Start free.
Managed PQC key lifecycle — generate, rotate, and retire quantum-safe keys without building crypto infrastructure. NIST FIPS 203/204 compliant. Your private keys never leave our secure enclave — and with client-side encryption, your plaintext never leaves yours. Everything you need to manage post-quantum keys, encrypt data, and sign documents — without the infrastructure complexity. Generate, rotate, retire, and archive quantum-safe keys through simple API calls. Explicit key versioning ensures every operation is traceable. No PQC expertise required — we handle the cryptographic infrastructure. Private keys never leave our KMS secure enclave — every private-key operation runs inside it.…from qpher.ai
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filippo.io/mlkem768 – Post-Quantum Cryptography for the Go Ecosystem2024 · words.filippo.io · ▲315filippo.io/mlkem768 is a pure-Go implementation of the post-quantum key exchange mechanism ML-KEM-768 optimized for correctness and readability.




- TPTutaCrypt, post-quantum encryption protocols for securing emails [pdf]2024 · tuta.com · ▲15
Hi HN, we are the developers from Tuta (formerly Tutanota), the German end-to-end encrypted email provider, and we recently released the world's first post-quantum encryption for email. We have included a full technical write-up of the cryptography involved in these changes and we have released it for open public review. This document specifies TutaCrypt, a protocol designed for hybrid email encryption in Tuta Mail. The protocol combines a classical Elliptic-Curve-Diffie-Hellman key exchange with a post-quantum KEM. The goal is to replace the usage of RSA in Tuta Mail. In the remainder of…
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