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user public key apis

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This commit is contained in:
Kyle Spearrin
2018-07-11 13:30:06 -04:00
parent e9518e104e
commit d7f3f9425e
5 changed files with 40 additions and 19 deletions
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38
src/services/crypto.service.ts
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@@ -356,6 +356,25 @@ export class CryptoService implements CryptoServiceAbstraction {
return encBytes.buffer;
}
async rsaEncrypt(data: ArrayBuffer, publicKey?: ArrayBuffer, key?: SymmetricCryptoKey): Promise<CipherString> {
if (publicKey == null) {
publicKey = await this.getPublicKey();
}
if (publicKey == null) {
throw new Error('Public key unavailable.');
}
let type = EncryptionType.Rsa2048_OaepSha1_B64;
const encBytes = await this.cryptoFunctionService.rsaEncrypt(data, publicKey, 'sha1');
let mac: string = null;
if (key != null && key.macKey != null) {
type = EncryptionType.Rsa2048_OaepSha1_HmacSha256_B64;
const macBytes = await this.cryptoFunctionService.hmac(encBytes, key.macKey, 'sha256');
mac = Utils.fromBufferToB64(macBytes);
}
return new CipherString(type, Utils.fromBufferToB64(encBytes), null, mac);
}
async decrypt(cipherString: CipherString, key?: SymmetricCryptoKey): Promise<ArrayBuffer> {
const iv = Utils.fromB64ToArray(cipherString.iv).buffer;
const data = Utils.fromB64ToArray(cipherString.data).buffer;
@@ -530,25 +549,6 @@ export class CryptoService implements CryptoServiceAbstraction {
return await this.cryptoFunctionService.aesDecrypt(data, iv, theKey.encKey);
}
private async rsaEncrypt(data: ArrayBuffer, publicKey?: ArrayBuffer, key?: SymmetricCryptoKey) {
if (publicKey == null) {
publicKey = await this.getPublicKey();
}
if (publicKey == null) {
throw new Error('Public key unavailable.');
}
let type = EncryptionType.Rsa2048_OaepSha1_B64;
const encBytes = await this.cryptoFunctionService.rsaEncrypt(data, publicKey, 'sha1');
let mac: string = null;
if (key != null && key.macKey != null) {
type = EncryptionType.Rsa2048_OaepSha1_HmacSha256_B64;
const macBytes = await this.cryptoFunctionService.hmac(encBytes, key.macKey, 'sha256');
mac = Utils.fromBufferToB64(macBytes);
}
return new CipherString(type, Utils.fromBufferToB64(encBytes), null, mac);
}
private async rsaDecrypt(encValue: string): Promise<ArrayBuffer> {
const headerPieces = encValue.split('.');
let encType: EncryptionType = null;