As Proof of Concept should be sufficient. Signing normally involves hashing the message and signing the hash, bus as our message is small enough we skip hashing and sign the message itself. They are saved in the same folder where we generated the key to check them outside of SAP. In the following program we are encrypting with the public key and signing with the private key this message ‘Thirty-two bytes secret message!’. Now with the key and the Z04_BIGINTX class we are ready to write our program. ISO/cyQOFCNB7MiPbiNOdGmn7S/ml5KzBCTIW圜QQ60fyvG9yDYnSvqtDqECgYBkĢ9Cxd9us916QKxRQ2U4KXMB04VTep4RRnMF8FuCMDsnGZRDWKijzt8TS88oT3W+gīDYBn3E3vLOFGSPBAEIeRfdKcyaBmVNycTZu6iBXS0zV/X+AdA8mGEHlfUjUifX8ĤEx517wvcoyuYmf+D5wieFW2KreAHpFULRjMTcqGQwKBgQCMrLoC1dasdvcQ/d9r OIgesOJKsCYb7wHEuanKrTPzE5FBzMCuQcXYpYUz9gr7YBTuZ+ZAcF1H5J9aQO9z J235xfPu63MCgYEA4qA+HljX14RK1kw3d/Ad6ocMDDsCsU/qDlvhUDKWcMyBUeSa URG+A//PIG/yUVuOV6nuCYKsY2v2oTUF+v8HGMkfa7WkEhD5S5lZ+oA8gVMXQ4Ey GLb7qKNPawRbMff204xx7OtzHD77Th6hcvaXU0C/D4c+DMZNQ/2M4xbLoZWPTOnKīxOhpbZMH4prxLA4U/6TDQwo9F3kW/1zPcYKfxOgW6tlVHWnLR4Kd1+W7ygNOhjVĮl6lWwi008547z05w5ZQ2T+U3OECgYEA7Z+fO6ZWIRqHJq1MCzStTtS+hGkwJArjĭGy8AbvGV7LScmH31sxRJqZp6jHMOICBjgwAPN0VE5eq+xUcPs0p5/seTy/MzSbf HAUylXCNtnrRJv0sMvQJOy59gBjiPn3GW62t8Kf/km3IlDRKE7h9xYECafQabaXRĠq6swX09YpdKKBEHYLE9ArpamJtJYPtlA2XSvsfBqkECgYEA84Bt20EpBPldrUFN PSB1Wf+LdZ1EOTaEfk3+lgEpEUzdFTNEC/jwrQJiXzSB+nP5bB0Az3kMcbhxwa01
![codevisionavr v2.04.4a codevisionavr v2.04.4a](https://i2.wp.com/texnic.ru/books/mk/img/007-1.jpg)
XkwknIlrB6gavhVp5+9dnLbijZMhcsOukfyWYaifEXdovggQxGw/3siyoxXyyxyd OWqbzIjZakopIlufVCT8zMqw3i4/1xRGK+k8aYjNKi7feKZI4FCjRF2/iu92vW7w +ykiz8QTAgMBAAECggEBAL27/tt+FEhEcymQliS/in6SWkGnBs1xwKRUXEMuvxCK SZFbHPEddfkCZDNfSodmRd+WZTuCRjD6+K/9+K1j7Kk4a2LMC7r0bPOIYcrW+0VC JUK6XfpcyYymJ1KMmG/UhsIENLxhaU56/gnKdl01XTcKe+JkBpv02dpw+bw6BE34Ģ1FXFmSpoduAHA8/lm+9U6PqdvxU6IDB16n5X74IyUCTQsMW7XQgaw3cqVWTYigU MIIEvwIBADANBgkqhkiG9w0BAQEFAASCBKkwggSlAgEAAoIBAQDiBbntt4wk807Qīzh0gdwwXFyxe1/a41dDZeekgxC5p649B1pT6Ft7P6eSmZqDdZ6t04JpzAdyHjzjĢDMPt6VpAkXyaQSXLHd7dKWYnw2b/akWptd761zx9oIY1tHz0y4VbfkX0yt7FwvP tmp/rsa > openssl pkey -in rsa.key -text We need only the modulus, the publicExponent and the privateExponent. Print out the key with the public and private components in plain text.
![codevisionavr v2.04.4a codevisionavr v2.04.4a](http://bezkz.su/uploads/posts/2012-11/1352292725_1352291116_codevisionavr_2044a_454338.jpeg)
Generating RSA private key, 2048 bit long modulus (2 primes) tmp/rsa > openssl genrsa -out rsa.key 2048 Luckily this problem is solved by Harry Boeck with the class Z04_BIGINTX which can be found here (excellent work).įirst make a working directory and cd to it. The only problem is, the integers involved are longer than ABAP and most other languages can handle by default. All you need is integer arithmetic – mainly modular exponentiation. Example 1 – Using own RSA implementation in ABAP. All the overhead like certificates, trust, revocation and key generation will not be touched here.
#CODEVISIONAVR V2.04.4A HOW TO#
Here I will try to provides some examples how to use public/private key encryption in ABAP. Recently I stumbled across a lot of unanswered questions about RSA encryption.