Digital transaction signing for multiple client devices using secured encrypted private keys

Abstract

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for signing digital transactions from multiple client devices using secured encrypted private keys associated with electronic accounts. One of the operations is performed by storing multiple encrypted private keys in a memory cache accessible by a primary device. Each of the stored encrypted private keys are associated with an electronic account. An electronic transaction which is associated with an electronic account is received from a secondary device. A particular encrypted private key from the stored multiple encrypted private keys is identified. The identified encrypted private key is transmitted to a decrypting service where the encrypted private key is decrypted. The electronic transaction is then digitally signed based on the unencrypted private key. Then the digitally signed electronic transaction is transmitted to the requesting secondary device.