Sleipnir - Super Fast Vanity SSH Key Generator

Sleipnir is a super fast cross-platform vanity SSH key generator written in Go, capable of generating 26,000,000+ ED25519 keys per second on modern hardware using both CPU and GPU processing. Named after Odin's eight-legged horse from Norse mythology, Sleipnir gallops through keyspace at incredible speeds to find your perfect vanity SSH keys.

Compiling

Please checkout the DOCS for information on windows and Linux compiles.

Usage

Basic Usage

# Find "cool" anywhere in the SSH key
./sleipnir -pattern cool

# Find key ending with "1337" OR "meng" OR "github"
./sleipnir -pattern 1337,meng,github -location end

# Use the gpu and cpu to find keys
./sleipnir -pattern mari -location end -gpu

For more usage examples please go to the DOCS

Example

./sleipnir -pattern MENG -location end -ignore-case=false

Sleipnir galloping with 24 workers...
Hunting pattern: MENG
Press Ctrl+C to stop
Expected tries: 1.6777216e+07
|Average keys per second: 977558| |Total tries: 4887855| |Calculated wait time: 0d 00h 00m 05s/0d 00h 00m 17s|
|Average keys per second: 975424| |Total tries: 9764953| |Calculated wait time: 0d 00h 00m 10s/0d 00h 00m 17s|
...
|Average keys per second: 979482| |Total tries: 29326450| |Calculated wait time: 0d 00h 00m 30s/0d 00h 00m 17s|
Made it in 33054311 tries

KEY FOUND :)!
OpenSSH Private Key:
-----BEGIN OPENSSH PRIVATE KEY-----
Removed so nobody would actually use this key :p
-----END OPENSSH PRIVATE KEY-----

Public Key:
ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAII44C87jrgvZi/pkNUVpwb0jlnUGXkiUu+/RMS5wMENG
All goroutines closed successfully

Note

If you want the PKCS#8 format instead of OpenSSH you will have to run sleipnir with -verbose

Tests

Benchmark the speed of the ssh keygen per core and the Sleipnir keys/s:

go test -bench .

Test if we are generating valid ssh keys:

go test -v

Flagegraph:

Run sleipnir for a bit with the -pprof flag Then run the following command:

go tool pprof -http=:8000 sleipnir.pprof

Visit http://localhost:8000/ui/flamegraph for the graph.

Benchmarks

GPU	keys/s	OS	Version	batch-size
GeForce RTX 4070 12GB	~26M	Debian Linux 13	1.0.0	33554432
GeForce RTX 3080 10GB	~23M	Arch Linux	1.0.0	16777216
GeForce RTX 3080 10GB	~17M	Windows 11 23H2	pre-1.0.0	?
GeForce RTX 3060 Ti 8GB	~12.5M	Windows 11 23H2	pre-1.0.0	?
GeForce RTX 4070 12GB	~9.5M	Debian Linux 12	pre-1.0.0	?

CPU	keys/s	OS	Version
Intel Core i7-13700K	~1M	Windows 11 23H2	pre-1.0.0
AMD Ryzen 9 7950X	~920k	Fedora Linux 42	pre-1.0.0
AMD Ryzen 7 7800x3d	~570K	Fedora Linux 42	pre-1.0.0
AMD Ryzen 5 7600X	~500K	Debian Linux 12	pre-1.0.0
Apple M1	~280k	macOS 26	pre-1.0.0
lx2160a A72	~143K	Fedora Linux 42	pre-1.0.0