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Add X25519 conversion to Sodium

This commit is contained in:
nielsandriesse 2020-09-24 17:47:30 +10:00
parent 6430c36307
commit 6669f6a9d1
2 changed files with 45 additions and 0 deletions
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4
Signal.xcodeproj/project.pbxproj
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@ -596,6 +596,7 @@
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@ -1394,6 +1395,7 @@
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@ -2691,6 +2693,7 @@
C35E8AAD2485E51D00ACB629 /* IP2Country.swift */,
B84664F4235022F30083A1CD /* MentionUtilities.swift */,
B886B4A82398BA1500211ABE /* QRCode.swift */,
C3E7134E251C867C009649BB /* Sodium+Conversion.swift */,
B8783E9D23EB948D00404FB8 /* UILabel+Interaction.swift */,
B83F2B87240CB75A000A54AB /* UIImage+Scaling.swift */,
C31A6C59247F214E001123EF /* UIView+Glow.swift */,
@ -3961,6 +3964,7 @@
34D1F0831F8678AA0066283D /* ConversationInputTextView.m in Sources */,
340FC8B6204DAC8D007AEB0F /* OWSQRCodeScanningViewController.m in Sources */,
4CB5F26920F7D060004D1B42 /* MessageActions.swift in Sources */,
C3E7134F251C867C009649BB /* Sodium+Conversion.swift in Sources */,
340FC8B5204DAC8D007AEB0F /* AboutTableViewController.m in Sources */,
34BECE2B1F74C12700D7438D /* DebugUIStress.m in Sources */,
340FC8B9204DAC8D007AEB0F /* UpdateGroupViewController.m in Sources */,

41
Signal/src/Loki/Utilities/Sodium+Conversion.swift Normal file
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@ -0,0 +1,41 @@
import Clibsodium
import Sodium
extension Sign {
/**
Converts an Ed25519 public key to an X25519 public key.
- Parameter ed25519PublicKey: The Ed25519 public key to convert.
- Returns: The X25519 public key if conversion is successful.
*/
public func toX25519(ed25519PublicKey: PublicKey) -> PublicKey? {
var x25519PublicKey = PublicKey(repeating: 0, count: 32)
// FIXME: It'd be nice to check the exit code here, but all the properties of the object
// returned by the call below are internal.
let _ = crypto_sign_ed25519_pk_to_curve25519 (
&x25519PublicKey,
ed25519PublicKey
)
return x25519PublicKey
}
/**
Converts an Ed25519 secret key to an X25519 secret key.
- Parameter ed25519SecretKey: The Ed25519 secret key to convert.
- Returns: The X25519 secret key if conversion is successful.
*/
public func toX25519(ed25519SecretKey: SecretKey) -> SecretKey? {
var x25519SecretKey = SecretKey(repeating: 0, count: 32)
// FIXME: It'd be nice to check the exit code here, but all the properties of the object
// returned by the call below are internal.
let _ = crypto_sign_ed25519_sk_to_curve25519 (
&x25519SecretKey,
ed25519SecretKey
)
return x25519SecretKey
}
}