92 lines
3.6 KiB
Markdown
92 lines
3.6 KiB
Markdown
# JWE [](https://pkg.go.dev/github.com/lestrrat-go/jwx/jwe)
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Package jwe implements JWE as described in [RFC7516](https://tools.ietf.org/html/rfc7516)
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* Encrypt and Decrypt arbitrary data
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* Content compression and decompression
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* Add arbitrary fields in the JWE header object
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Examples are located in the examples directory ([jwe_example_test.go](../examples/jwe_example_test.go))
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Supported key encryption algorithm:
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| Algorithm | Supported? | Constant in [jwa](../jwa) |
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|:-----------------------------------------|:-----------|:-------------------------|
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| RSA-PKCS1v1.5 | YES | jwa.RSA1_5 |
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| RSA-OAEP-SHA1 | YES | jwa.RSA_OAEP |
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| RSA-OAEP-SHA256 | YES | jwa.RSA_OAEP_256 |
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| AES key wrap (128) | YES | jwa.A128KW |
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| AES key wrap (192) | YES | jwa.A192KW |
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| AES key wrap (256) | YES | jwa.A256KW |
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| Direct encryption | YES (1) | jwa.DIRECT |
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| ECDH-ES | YES (1) | jwa.ECDH_ES |
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| ECDH-ES + AES key wrap (128) | YES | jwa.ECDH_ES_A128KW |
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| ECDH-ES + AES key wrap (192) | YES | jwa.ECDH_ES_A192KW |
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| ECDH-ES + AES key wrap (256) | YES | jwa.ECDH_ES_A256KW |
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| AES-GCM key wrap (128) | YES | jwa.A128GCMKW |
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| AES-GCM key wrap (192) | YES | jwa.A192GCMKW |
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| AES-GCM key wrap (256) | YES | jwa.A256GCMKW |
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| PBES2 + HMAC-SHA256 + AES key wrap (128) | YES | jwa.PBES2_HS256_A128KW |
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| PBES2 + HMAC-SHA384 + AES key wrap (192) | YES | jwa.PBES2_HS384_A192KW |
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| PBES2 + HMAC-SHA512 + AES key wrap (256) | YES | jwa.PBES2_HS512_A256KW |
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* Note 1: Single-recipient only
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Supported content encryption algorithm:
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| Algorithm | Supported? | Constant in [jwa](../jwa) |
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|:----------------------------|:-----------|:--------------------------|
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| AES-CBC + HMAC-SHA256 (128) | YES | jwa.A128CBC_HS256 |
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| AES-CBC + HMAC-SHA384 (192) | YES | jwa.A192CBC_HS384 |
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| AES-CBC + HMAC-SHA512 (256) | YES | jwa.A256CBC_HS512 |
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| AES-GCM (128) | YES | jwa.A128GCM |
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| AES-GCM (192) | YES | jwa.A192GCM |
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| AES-GCM (256) | YES | jwa.A256GCM |
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# SYNOPSIS
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## Encrypt data
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```go
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func ExampleEncrypt() {
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privkey, err := rsa.GenerateKey(rand.Reader, 2048)
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if err != nil {
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log.Printf("failed to generate private key: %s", err)
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return
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}
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payload := []byte("Lorem Ipsum")
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encrypted, err := jwe.Encrypt(payload, jwa.RSA1_5, &privkey.PublicKey, jwa.A128CBC_HS256, jwa.NoCompress)
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if err != nil {
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log.Printf("failed to encrypt payload: %s", err)
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return
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}
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_ = encrypted
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// OUTPUT:
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}
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```
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## Decrypt data
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```go
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func ExampleDecrypt() {
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privkey, encrypted, err := exampleGenPayload()
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if err != nil {
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log.Printf("failed to generate encrypted payload: %s", err)
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return
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}
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decrypted, err := jwe.Decrypt(encrypted, jwa.RSA1_5, privkey)
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if err != nil {
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log.Printf("failed to decrypt: %s", err)
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return
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}
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if string(decrypted) != "Lorem Ipsum" {
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log.Printf("WHAT?!")
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return
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}
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// OUTPUT:
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}
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```
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