Authentication of digital media has been done with the various scheme, one of them is a digital signature. The digital signature attached by the sender to the document can be used as a tool to ensure that the submitted document is authentic or not manipulated. So research on digital signatures should be developed to improve its ability to provide security and prove the authenticity of the image. Cryptography is one of the most popular fields of study these days as it is necessary to maintain the confidentiality of the data which is sent over the network. Cryptography is the only powerful tool for achieving high levels of information security in a computer networks environment. Cryptography can support implementation of all these security services, by using various cryptographic techniques, which include among other things conventional secret key algorithms, public-key algorithms, authentication procedures, and different digital signature schemes. Each of these methods has its own shortcomings. A new scheme for evaluating the cryptographic security. so research on digital signatures should be developed to improve its ability to provide security and prove the authenticity of the image. This paper sets out to contribute to the general body of in the area of cryptography application and by a new way of implementing. This paper research a combination of three algorithms to the created digital signature, namely: Rivest -Shamir -Adleman (RSA), Vigenere Cipher and Message Digest 5 (MD 5).By combining these three algorithms, the data security level becomes stronger. This algorithm can protect from image forgery or various image manipulations.