[libeufin] 01/04: pad IBAN checksum

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ms pushed a commit to branch master
in repository libeufin.

commit 2a438b1e515e2dffff379c59d6e21026b5cc7294
Author: ms <ms@taler.net>
AuthorDate: Wed Nov 10 17:08:49 2021 +0100

    pad IBAN checksum
---
 util/src/main/kotlin/iban.kt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/util/src/main/kotlin/iban.kt b/util/src/main/kotlin/iban.kt
index cf1fc005..b2de9351 100644
--- a/util/src/main/kotlin/iban.kt
+++ b/util/src/main/kotlin/iban.kt
@@ -7,6 +7,9 @@ fun getIban(): String {
     val bban = (0..3).map {
         (0..9).random()
     }.joinToString("") // 4 digits BBAN.
-    val checkDigits = 
"98".toBigInteger().minus("$bban$ccNoCheck".toBigInteger().mod("97".toBigInteger()))
+    var checkDigits = 
"98".toBigInteger().minus("$bban$ccNoCheck".toBigInteger().mod("97".toBigInteger())).toString()
+    if (checkDigits.length == 1) {
+        checkDigits = "0${checkDigits}"
+    }
     return "DE$checkDigits$bban"
 }
\ No newline at end of file

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